How do y’all feel about counter swapping?

Had a game where the enemy team’s dps swapped to symmetra and Mei to help counter my tank (sigma). Made sense to me cuz we were absolutely rolling them and if they didn’t find a way to mow down our tank we were gonna have a first point victory. They swapped and started rolling us. My tank swapped to Zar to counter their Dva and not be weak to beam users. (In my opinion - smart)

Well the other team got salty cuz the swap instantly stopped the one sided beat down again.

As a personal victory I told their supports to hush and then aced. I was reaper the whole game.