Since one complaint involves the level design, just looks like general salt to me :p Thanks for answering my question.
It is and isn't because he's like... really good. He just happens to also be a very particular person, so when there's something he used to like (96 in S1) and he doesn't like anything in S2 quite as much, he gets salty about that.
I feel him in this regard. I cut it out of the convo because I wasn't relevant, but I mentioned how the level designs and various nerfs made the luna feel off for me -- to the point where I just don't use it at all in S2. But for me, that salt is just seasoning atop the amazing meal that is the rapid blaster. The flatter level designs/neutral choke points/hiding places to better approach campers all make the rapid blaster so deadly in S2.
I think if he keeps an open mind and finds an alternative he can love just as much as he loved the 96 in S1, that salt will be seasoning atop his meal as well. He just hasn't found that yet.
The level design salt is like... half accurate. A pinch of salt? Not all the maps are out yet, and some of the upcoming ones appear to be exactly what he'd like. It's a bad idea to judge a newly released game like this against the finished product of S1.