Ok now I've read a bunch of the comments after waking up, with this issue of the amount of players that play very poorly it is caused by a combination of a few things I think.
1) Potd- yes its true that bad players existed before this but it certainly doesn't help the issue, new players using this to lv so they can get up to higher lv content faster they get all these skills and abilities thrown at them and have no idea how to use them let alone set up a efficient hot bar set up.
2) Duty Finder- as convenient as this is it doesn't encourage ppl to learn their jobs or to play better simply because they can get into what ever duty they want with it, yes there is the kick option but alot of ppl won't kick a healer or a tank because sometimes the wait time to get a replacement can take forever. So most ppl will just try to get through the content and finish that run.
3) Solo content- There is too much content for soloing and they can play how they want so when they do have to do group content where there are certain expectations everyone is expected to meet at a minimum level of skill some of these player are not able to meet them. No this isn't an elitist point of view on this I actually expect anyone I play with to make some mistakes just because its human to make mistakes and just have an off day, elitists tend to expect that you don't make a single mistake and if you do they go off on you about it.
There are probably more factors that contribute to poor players. I come from ff XI we had no duty finder finder on there and you were expected to know the basic's of your job, if you developed a bad reputation for not doing what was expected of the job you were playing or would go afk alot while in parties or other things like that you would have trouble finding a party to join because unless you were the only one seeking a party on that job they would go to the next person. You could only solo so far into the game before you would run out of mobs you could solo and get exp from, at around lv 10-13 you could get into your first leveling party, I usually solo'd up to lv 20 to avoid an area I referred to as 'the dooms' because that was where ppl were still learning their jobs and I found I could lv faster soloing than in a party with the down time due to wipes.
I've heard similar stories like this from other ppl from other games too. Like I'm good and like to learn each job I play properly so I'm not just dead weight but have never been an elitist, on ff XI we had elitist types on there too and like I said they expect ppl to play to the maximum potential your selected job can and are the ones with those third party apps that calculates each players dmg and you get kicked if you don't have extremely high dps.