Many of the balance issues we suffer from right now were created by the "community" balance team. Centaur AI monster for 100 fuel, IL2 loiter, OKW flak HT, PPSH guard combined soviet meta, Guards, Valiant Assault, overnerfs of most British tanks, uselessness of British Mortar Pits etc
Meanwhile real balance issues largely got ignored until now
While those things you listed may be unbalanced, I dare you to name a relic patch that hasn't had at least one thing so hilariously broken it ceased to be funny.
Let us not forget bofors on release, centaur on release, that patch where everyone was spamming aec's, crocodile, when isg's used to suppress, 160 damage kat rockets, advanced emplacements, b4, 120mm, when jagd could shoot through buildings, oh and my personal favorite: double health double armor tiger ace that had a stun and vision and gave you your income back after 10 minutes or whatever it was.
This game has always been unbalanced so dont pretend like it's ever been better.