Yoshi has said about 5% of players have even cleared T5, even if it's 6-7 now, who knows how many have tried and given up or are still stuck on even older content such as Primal EXs etc... I'm not saying these players are mentally incapable of completing the content, I'm saying they don't have either the time, dedication or motivation to complete some of the content, the way it is as released.
But to that you say:
The whole game and MMOs are moving towards the direction of catering to players who don't have "as much" time for practicing, many of us are seeing these players leave, they are frustrated because they only have 1-2 hours to play a day and all they do is hit the wall that is Titan EX or whatever.
In regards to the game, it's not working, maybe it's less apparent on your server, I don't know - or you have "sample bias" meaning you're in a good FC or LS with other skilled players who enjoy the game as it is. I used to play more, but as work picked up I've joined more casual LSes, and am seeing many players leave for other games, so are many others, that's why I'm so adamant about these issues.
I just hate hearing elitists, say "this game is easier, just get better, practice, find a static", they are completely oblivious to other peoples' circumstances. It's frustrating for them, not fun, and they have no motivation because after they beat it, there's just more frustration waiting for them. But Yoshi put the main storyline content behind this difficulty wall, so they are forced into it. We realize they can only make content so fast, given their resources, so why not re-purpose existing older content so it's within reach of casual players? Echo was a start, but it was a lazy nerf, it doesn't address a lot, there's a lot more balancing they could be doing there.
Though they are on a good track, I really like the sightseeing log and such, gives them more casual things to tide them over.