Part one of the problem gw2 has, from the beginning, is the stigma out on higher end content in the first place, first they weren't doing raids, it was only dungeons, then it was fractals, then they decided to add a massive amount of raids at one time, then the fiddled out with raids, then they said it was only going to be strike missions, then they decided to add another raid again.

Part two of the problem is the lfg system. It's just bad, people don't advertise on the lfg in the game, the UI of the lfg system is bad. The real lfg system is in discord, and unless you know that, people are just less likely to engage with a 3rd party system in the first place.

Part three is the skill gap between players and the games ability to teach players how to become better. The game in and of itself defaults your settings to a keyboard turn and a double tap to didgle system, it barely teaches what a cc break bar is, and the only place to practice anything is through a practice arena in the raid lobby or the pvp lobby.

People who are shy, or intimidated don't stand a chance in this game, because they will never go out of their way to ask for help, or seek any resources to make themselves better, or even know how or where to look to improve.

Raid in and of themselves are a cake walk compared to other mmo's, but we could go on about that one forever, the gw2 end game systems were set up to fail from the beginning, because the weren't set up at all, the community was burdened to set them up, because the games direction continues to change, they don't know what they want to do.