I am a firm believer people suck at this game because some people just have a ceiling. Somethings are just more natural for others. Normal Joe can improve his basketball game, but if the natural skill is not there he cannot become an NBA superstar, maybe an ok player with unshakable will and working hard. No content should be an absolute joke. If most of the playerbase still die frequently and don't get consistent clears then it is not a joke.
The players who can't/won't commit to raids have three possible reasons.
1.They cannot get good enough
2.They cannot or will not get 24 other players in a static and practice a routine hours upon hours.
3.There is not a lot to do besides raids here if progressing persistently on your combat class is your sole goal, minus hunts or faceroll stuff.
So it's kind of do raids or do something else way easier or not combat focused.
Easier has nothing to do with having long term goals in my opinion. Even if SE made the most difficult raids ever, only an elite would beat if fast. Their online guides would lead to the slightly less skilled getting it done. While everyone not up to snuff would try/die/and try to find something else to do.
Somebody will beat content fast even if most don't.
The main things that affect long term activities is:
1.Finding something you're able to do consistently progressing slowly
2.Gating (It's a naughty word, but no amount of skill can overcome it)
3.Long Persistent content(Content that regardless of skill takes tremendous amounts of time to achieve)
To reach the widest possible base it has to be something that requires thought, competent execution(not flawless execution), and allows people to depend on one another without requiring you to live in the game or be at a standstill without others. Currently after MSQ if you don't trial or raid most stuff is braindead easy or requires you to kill things on lower level content.
Anyways not calling you out because from your post it seems you are pretty good at raids and it's good there is stuff you can do. I just want something different besides raids personally. Something challenging but not finger pretzel super challenging that is pretty easy to get groups for that dynamically scale, not fates, not hunts, not relic farming at beginner areas.