Aiming is skill yes.
So is every other kind of skill in this game.
People have no problem acknowledging aiming as skill, instead they have difficulty acknowledging skill when aim is not the focus.
People also have difficulties acknowledging different amounts of other skill besides aiming. That someone playing Rein is infact better than the other dude playing Rein because the first rein player has vastly more game sense.
People also do not want to acknowledge the fact that yes, you need different quantities of game sense in a different way when you play mccree versus winston. You do not need the game sense to position versus a pharah or flankers as hitscan player if you play winston and at the same time, you do not need the game sense to dive targets and target prioritization and disengagement if you played mccree.
People also fail to acknowledge other mechanical aspects besides aiming as skill. Pressing shift as winston and jumping at enemies is simple in theory just like point and click with cursor, but micromanaging leaps, turns, curves and momentum, landing zones and cooldown and executing the perfect kind of jump you want at any given moment is not so simple anymore and requires muscle memory training just like if somebody was to pick up Genji and train animation canceling.
So in the end, people fail to acknowledge that non-aim centric heroes can and will require quite a bit of both mechanical and game sense training to git gud.
That includes Mercy. Micromanaging her guardian angel flight paths on a lot faster cooldown is just one of the skills that separate Ark from rest of the Mercy players.
Failing to acknowledge different skills besides aiming is basically saying Fissure is not better than Iremiix, despite Fissure’s high skill level single-handedly lifting Los Angeles Gladiators from the mud, both figuratively and literally.
What continues to grind people’s gears is the “holier-than-thou” attitude that implies people who play aim-centric mechanical skill heroes are automatically better than those that do not play widow or mccree. They are not.
If we stopped that elitist attitude and started acknowledging skill as a whole, we’d all be in much better place as a community.