So,is this true or are the guides he read just shitty?
Is being at lvl 50 really the stop of anything fun in the game and it's all a huuuuuge grind of dailies and the same dungeon over and over?
Honestly getting to 50, I feel, is the most annoying part of the game, because that's when the game starts. There's a bit of grind to get some gear, but lower leveled gear is relatively easy to come by. If you can collect the post game currency by running dungeons/primals/old coil turns/etc you can go from level 50 gear to level 110+ gear relatively fast. There's going to be a certain grind to it, but that's sort of the point of MMO's, in a way.
There are a slew of level 50 dungeons to run, plus there are larger 24 man raids like Crystal/Syrcus Tower, 8 man raids in the first and second coil of bahamut, a lot of primal fights and all that sort of thing. Basically, there are ways to break up the grind to not make it feel like you're doing the same thing over and over.