At this point, it’s becoming humorous, I mean how basic do I need to break down my argument for you to understand it.
Here, let me simplify it for you even more:
When creating a design for a character, the developers look at abilities, how those abilities interact with one another and with other heroes etc. Does the character require mechanical skill or not? And other things (Don’t want to go to complex so I don’t lose you )
Still with me?
So they create a character like Mercy which has certain skills etc. and they track the character based on the above mentioned thing, plus statistics etc. (again don’t wanna go to complex so I don’t lose you).
Now, Pros look at the same things (mind you it’s the lesser picture since they don’t have all the data) and create a view of their own.
The community on the other hand views things in their own way based on their information that they have (which is limited and also less complete than Pros because lack of skill can interfere with objectivity, that’s another topic, again don’t want to lose you).
Still with me?
So the developers basically stated that when they think about balance they think about what each side says - the Devs, the Pros and the community.
Still with me?
And what do all three parts of this trifecta look at when discussing balance: the character’s kit, mechanical skill or lack thereof, statistics, performance etc. (Don’t wanna go into too much detail as well).
So one does not invalidate the other, it’s just three sides looking at different factors, and one of these factors is mechanical skill.
Is this simple enough for you?