I'm sticking with my "Long Kiss Goodnight" theory right now in regards to Rey.
And, yeah, Chewie's bowcaster is supposed to be more powerful and accurate than a laser-pistol so maybe it's a bit beyond Kylo's ability to stop it or, he just didn't have the chance/reflexes at the time to do it.
If I had to make *some* complaint, and I do have some minor ones, is I suppose the "callbacks" obviously there for some level of fan service. Them stumbling upon the Falcon is fine and then shortly after Chewie and Han show-up is fine, other coincidences like that I can more-or-less deal with.
But in the several decades they've worked together Han has never used Chewie's bowcaster? At all? Or noticed how well it fired and how well he used it?
But the one sort of odd and out of place "callback" is when Han suggests putting what's-her-name Captain Silver Storm Trooper Armor in the garbage compactor. Obviously a call back to ANH and, after 30-40 years, Han wanting to get payback for something that happened to him back then. But, first of all he was in that compactor from more-or-less his own fault considering the situation they were in and how he decided to escape from it and, well, he did come out of it perfectly fine.
So, I dunno, there were maybe a couple of other little "wink, wink" moments like that that were a little silly. I think Finn tossing aside the training-droid thing is another along those lines.
But, really, any "complaints" I can think of are minor ones like that because any larger complaints I'm waiting to see if they're explained or fleshed out in future movies/installments.