@be-Betsuniii I noticed the same thing going on since season 20 that you just pointed out here.
Back in season 20 they made some changes to the weapons, you'll notice if you compare season 19 and season 20 footage of the hcog 1x and 2x attachments that they are much thicker and have a larger reticle than the pre season 20 variant. Also, the sounds of the guns were changed and the ways the bullets fired.
What was going on in the video you posted is after season 20 the Hcog 1x and 2x would fire from the left or right instead of down the center the way they did pre season 20. In season 19 it was possible to snap right onto a target and take them out with 1 mag when using guns such as flatline, Nemesis, havoc, spitfire, etc. Now, you have to aim first since if you snap right onto a target the gun will fire either to the left or right of the target, buy not right at the target since the change was made. Basically, it is like shooting with a bent sight on a real gun.
Also shown in the video, the bullet passing through the person and going to the left or right was part of the no hit reg problem as described in the thread. Popular streamers Evan Verhulst and Maddie Taylor have done shorts showing this problem happen, I linked to the one Verhulst did in an earlier thread. Also, these issues caused 4 1/2 pages of friends that I had on apex to leave the game and switch to other games, I talk to Randoms about this stuff all the time and they all tell me it's the same now everytime they play, hardly no kills or damage except rare matches where it runs better.
I actually got good hit reg in a ranked match a few nights ago and managed to get over 300 rp and last all the way to the final 2, coming in 2nd. Then back to zero damage matches or matches where a whole mag does 35 damage or something. Prior to season 20 almost every match I got 5 or 6 kills in pubs or ranked, and could get 15 kills or so in mixtape matches. I hate it things have gone downhill since then. Thank you for validating the points I was making here. If enough people complain hopefully the devs will listen. They have been sending surveys out and listening more lately so it's a good sign.