Because, at their core, RDM still has to cast (ie, stand still) every other spell and do minimal math regarding their mana bars, whereas DNC is literally "press 1-2 until any other button lights up"
As a DNC main I don't know why people don't do their steps because the rotation is so damn easy. And you do great DPS damage to boot.
There is a misconception with Standard Step that you only need to do it when the buff is about to fall rather than doing it on cool down, which is what you are meant to do. I have seen the same with tech step though, I dont understand not using it.
The same reason for every other class in the game - people are lazy and do not care about improving, even in a team-based activity. The playerbase on a whole basically enabling and coddling these people only exacerbates the issue.
As a DNC main, seeing other people not even doing the basic bare minimum job expectations hurts me. I honestly do not think I have ever run across a good DNC. And my expectations for DNCs is lower than some classes simply because it is a very, very easy job - probably the easiest job in the game aside from RDM. Somehow, people still manage to not meet even the lowest expectation of "partner someone who isn't on the floor constantly, use your DANCES on a DANCER class."
You learn something new every day I suppose.. as someone who plays Dancer every now and then.. not that often, I didn't even known that Standard Finish and Technical Finish were also damage dealing AoE's. I feel like a doofus now with how I always used the steps.. namely, at moments where I'm not at risk, downtime.
Welp, guess that's what you get when you don't read every skill description in the P screen.
I noticed that too. And I also noticed DNCs who make terrible decisions when it comes to picking a dance partner.
It irritates me because that kind of behavior is why I see people who claim they groan anytime there is a dancer in their duty. And DNC is my main DPS.
Allow me to disagree on some points (and forgive me if I misinterpret your post completely the other way around than its intended to be)
First is their mobility. DNC is a ranged physical, thus they are free to literally do some marathon across the entire arena and still be able to keep their weaponskills going. RDM's Dualcast? Not by miles, at least when compared to the ranged physicals. Being a caster they require tiny bits of prepositioning to ensure they can keep their spellcast going in the event when boss mechanic starts to play. Additionally they are literally the only caster that has almost no answer to extended movement burst phases outside their short melee combo and enchanted reprise, in which they can only use the latter once or twice at most before they're delaying their melee combo (yes, Dualcast alone won't cut out, but that's a point to be discussed in another thread if any.)
Second is their burst phase & procs handling. On DNC they simply throw out everything they have under their own technical step & devilment buff window. Got Saber Dance? Unleash them. Got stocks of fans? Unload them to your heart's content. More of them lights up? Quick, spend them while under the buff window for a dps gain! And they can do this all from relatively safe distance, save for their AoE procs. Esprit gauge can basically semi-ignored outside burst window since they just have to make sure it doesn't overcap. They also want to spend any procs (except fans) that lights up. What about RDM? Can I safely get into the boss' melee range without screwing myself or anybody else? Can I get the finisher off in time? Cause losing even Verholy/Verflare and worst: Scorch, really stings. Oh, manafication is up! Can I land the whole combo under that tight 10s buff window? Can I spend my Displacement/Engagement and CaC prior to manafication so I can get the most benefit out of it? Oh no! Both Verfire and Verstone lights up but I already have 80 | 80 ready! Which proc that I should gave up or should I just go straight into the combo? Okay, I just finished Enchanted Redoublement! Gotta take care I don't press any other spell button! (inb4 I accidently press Jolt II and cry internally)
There's definitely less thinking required when playing a DNC and this simplicity is what attracts casual individuals. And amongst these individuals (like any other) bad apples exists. I do agree with you about RDM's braindead AoEs and they still remain one of the easiest job to play (after DNC imo) but that's as far as I'll go before deriving further from main topic ;)
Some easy perspective, one should realize Dancer has the least personal DPS of all the red jobs, and that is why you should use both dances on cooldown, even in non-savage content. The damage burst by tech alone is pretty darn good, and makes up for the least personal damage into a party buff. Now imagine tech finish hitting with DRG Battle Litany, SCH Chain Strategem, RDM Embolden, NIN Trick Attack all at the same time. If your dance partner delivers too, people are going to want to cling to your dancing all the time.