I think you completely missed the point. Apart from Maicon and Carlos were not the average player, he bolded that
PLAYER SLIPS and while sliding he does a sliding-tackle cross/shoot. You missed the most key part here.
Plus in your video, they're shooting from tight angles, not
SLIDING.
It is a very annoying animation that happens even in many previous PES games, IE happens a lot in PES 2021 , while running and trying to cross near the touchline.
The annoying and unrealistic is, it is applied A LOT much MORE POWER and accuracy on the ball than it can happen in real life football.
And I'm writing this to you after practicing this for years with very little success, in real football field. In most cases you can produce some random, balloon, embarrassing moments.
Only if you slide tackle-cross, when ball's trajectory and yours are between 30-90 degrees corner, only then you can apply some accuracy, but only after power, which is applied better in priority.
Also you must start slipping, before the ball passes the invisible height-point of your body center, in order for physics to work properly. In different case it works more as a deflection bounce.
For the record this slide-then-cross/shoot is clearly inspired by Captain Tsubasa , not real football.