I don't think I could say Oceano is sucky. but they have some shaping up to do, yes.
their vocals are what makes their music work. I've heard worse attempts at deathcore.
they kinda stick to a method that works. and it really works for them. at least it seems to considering some of the crowd reactions I've seen. which honestly isn't wrong. take it or leave it.
and the term "generic" should be banned by the supreme court because of it's overuse by musicians. musicians put each other down more than any other trade.
instead of hating them for being generic and unoriginal, lets give them a pat on the back for letting joey use them to make a great deathcore production that we can all reference mix with.