You can see the same thing if you go back to Summer 2009 before Borderlands was released. Random Kotaku commenters:
And anyway the more I see of this game, the more I’m thinking it’s not
worth my time. First the art direction goes to crap, then I start seeing
actual gameplay and it looks beyond generic
and
My only problem is that they’re really talking up all the looting and co-op which leaves me very little hope for an actual good story out of this. I’d like something actually serious but I doubt I’ll get it.
and
And I’m still not even remotely sold on the art style. I can’t stand it personally.
and
I’m remaining cautiously optimistic about this, but look how Brothers In Arms: Hell’s Highway turned out.
Somebody’s always going to complain about something, and Borderlands went through the exact same pre-release criticisms. I suspect that Battleborn is going to have a fairly soft release, get average ‘not for everybody’ critical scores, and then see a slow and steady build of a cult following as more and more people see how sweet a console FPS MOBA can be and start proselytizing about it in those same forums. It takes a long time for a new IP and unfamiliar game style to really take hold in popular consciousness, but the reason we’re all here is that something about this game has clicked with us on an intrinsically appealing level, and I don’t see any reason that won’t translate to broader success over time.