For noob content, I think having the game basically hand you victory's is OK (I still don't like it, but I can tolerate it). However for content that's supposed to be truly endgame and a challenge, I really feel like the echo is pretty horrible.
I haven't gotten through all the end game stuff yet (only started 2 weeks ago). But I remember when I did titan HM, it was a fun fight, I was just with some pugs, we wiped a couple times but were making progress, nobody seemed to be getting annoyed. Then the echo kicked in, and we won easily. Mostly because we got better sure, but I really felt robbed to be honest, It's not as if the fight is even hard, but being able to advance just because the game basically decided after just a few mins to hand you a crutch is annoying.
I would be fine with the Echo if triggering it was optional and would result in no advancement, achievements, or items. It would then have a semi legit use for practice.
Do gamers these days really have no pride?