Its cool they did this, but it never was a real barrier to anyone making a mythic.
There are still a few that will be impossible to solo because of the gameplay mechanics and amount of ground you have to cover (Lebros supplies).
The ones that can't be soloed (Lebros supplies is still tricky with 6 people going /THF) are few enough that they can be shouted for. So people can now concentrate on shouts for just the harder ones. It's a lot easier to do that for five than fifty. Plus, now they can solo to get their rank up. And there are also "hard" ones that are hard in a way that doesn't depend as much on the number of players, where soloing ten runs is a lot less annoying than trying to group up for ten runs.
I've heard that they are also planning to "adjust" the number of players for Salvage too, which means either two or one. Good thing I'm sitting on a buttload of assault points. I only have 40 alex deposited right now.
Ein hasn't been a problem for me because shouts were still effective on Sylph a few months ago, and I'm more than half way. (But now server population is way down, so yeah.) It's not hard to do a T3 with 6-9 non-stupid (knowing things like don't aggro the boss before killing all the adds) people. And once I get assaults out of the way, I'll be a lot more willing to help people do Nyzul clears, which I am also more than half way on tokens.