imo the problem with raiding, is that the game does not have a natural learning curve, culminating in savage. You can still clear expert roulette (SE really need to change the name of that roulette lol) without using half of the moves at your disposal, or following your rotation. We still have brds that never sing any songs at all, as an example, and the game does nothing precisely nothing to indicate to you that you should. Nowhere else in the game is apoc required, and if you can never use aetherial manipulation. Half of the playerbase, rightly or wrongly, measure the success of expert roulette on whether or not it is cleared.

If the game naturally got harder, and people got used to using more of their toolkit that perhaps they hadn't needed on easier content, they might be ready and be less daunted by raid. But it doesn't; you can clear 99% of things blindly button-mashing, and then there's raid that actually requires full knowledge of your class, group co-ordination and decent dps. You can't blame raid groups for only taking someone that already has a proven experience of raid, but it's also equally difficult for anyone to get that experience if they are new to raid scene