Symmetra was nerfed within 9 days for being 4th picked DPS

It’s more complicated than that. Balancing by pick/win rates is like using the gold medals to determine who won the game for the team.

They said that a long time ago in the old forums.

Even in your quote they stated they don’t balance solely off of stats so when people’s main argument here is stats, well, it’s not a very strong argument.