yeah aiming in ow is insanely hard honestly, instant accel is huge and anorexic female hitboxes make tracking/clicking pretty fucking hard. winston existing doesn't really negate the prior facts.
Also, i think genetics mattering for aiming should be an incredibly cold take, genetics matters for literally everything. many things that are less visible such as VO2max in athletes have huge genetic components (although it is certainly improvable, many people will simply never reach certain highs). reaction time has a huge genetic component (almost surely matters for aiming), fine motor control is also extremely heritable. Saying it's the only thing that matters is probably incredibly copium, but it's definitely still a factor. Idk what his actual stance is since i'd rather not actually look at it but just saying "genetics matters" is very fair.
that being said though dude is way too far up his own ass lol