mxrthen why r u still wrong...one of my pastimes is literally watching aim and movement in demos.
this is some anti-vaxxer telling a doctor that vaccines dont work type of shit.
It's not true that player movements are recreated perfectly. Firstly, STV demos usually have a very low tickrate (16 by default), and any movement between ticks is interpolated. Secondly, the angles you see in STV and spec are always slightly off because the server only shows an approximation to save bandwidth/space. A POV demo on the other hand is much more accurate because it is the right tickrate and angles, which is why a POV demo is so much better when reviewing cheat evidence.
However, this video is someone speccing another player in-game, in which case only the angles are incorrect while the tickrate is 66, making it more reliable as evidence, but the video is still only 30 fps. It would have been better if OP recorded a POV demo speccing this guy cheating, because that would have produced more reliable evidence.