Overhead hitboxes have always been weird, native problem - it's just more noticeable now that it can actually bounce off of the ground. Polearm thrust has also always been a bit random.
It's same ol' same ol'. People complaining about the other guy using an OP weapon when they die, spamming, hitboxes... Anything that takes the blame off them. And since they heard from a guy who heard it from a guy that hitboxes got changed, well, a wonderful excuse right there!