I read about half the thread, and I don't know that I necessarily have anything groundbreaking to add, but I'll tell my personal story of how I started the game.

I hit level cap back in 2.2, when Titan Hard was the hardest casual content we had in the game, and it was quite difficult. Getting hit by a couple aoes could kill you, and getting hit by a landslide would knock you off the arena, and you were unable to be raised. It wasn't super hard by today's standards, but everyone was worse at the game 10 years ago, and quite literally getting hit by one aoe could take you out of the entire fight.

I was new to the game, and no expert by any means, so I died a lot in that fight. Sometimes it was taking too many Weights, sometimes it was falling off, but if I ever got it in trial roulette, I never got through cleanly. So I decided one day that I was going to just queue for Titan Hard over and over until I got better at it. It took a good handful of tries, but eventually I could get through it without dying. A few runs later, I could do it without getting hit by anything. A bit after that, I was learning when the tummults came and when I should use Virus to mitigate them. 10 years later, I've cleared every raid since FCOB on patch and four out of five Ultimates.

Nobody starts out great at the game, and you're almost always going to die a few times in new content. That doesn't mean the content needs to be made easier, it just means you need practice. There's nothing in this game that's so hard that literally any player can't do it given sufficient practice and study. I genuinely believe that anybody can successfully clear Ultimates if they take the time to learn them and apply themselves, so normal raids should be well within anyone's grasp.

If you don't want to put the time in to practice the fights, to study your rotation, to improve at the game, that's fine. That content doesn't have to be for you. This game doesn't have to be for you. If you want to clear every fight on your first try with little to no issue, if you want a completely frictionless experience, that's what the story content is for. The raids, even on normal mode, are meant to be a step up from that for the players who do want that.