@GolKosh
If you only play WoT and don't care about CT clients you can still use old wot launcher. (since it's still available)
You can grab old WoTLauncher using WMCleaner (EU, NA, RU or Asia), and just extract it to your wot folder. (that's how i am avoiding game center since v1.0)
Uninstall game center and re-check your game client using wotlauncher or wgcleaner, you might need to re-download some files.
But you will be able to avoid game center garbage completely.
However it's best to do complete unistall of game to avoid issues, but you can also keep game files and uninstall only game center, it's up to you.
(so many companies forcing their own launchers upon us... ubisoft, epicgames, bethesda, wargaming...etc)
EDIT (19/10/2019) : Had to download WoT again, this method still works. (patch 1.6.1.1)