In all seriousness, some tanks do need a rework as there is always an OP tank the majority complains about when new tanks come out. Example? Night Stalker. Been hearing "OP OP" on that one a lot.
The MM itself has been contested since inception, and application awhile back. The winrate ratio. High plus low plus average vs average opposing team will usually steamroll the high/low. (There's several threads and red names that have discussed the aspects in detail, so we all should know how it's been done by now.)
One of the other discussions has been +1-1 MM. WG tried it out for a week. Everyone loved it. No issues, no bot lobbies, no problems, longer matches, more balanced outcomes. Tank tweaking didn't have to happen because there was an opposing force to it in the other team. It was great. Then WG went back to the +2-2 while they compiled the statistics of how the +-1 was... Why it's taking so long to see all the ✅✅✅ across the board - idk. It was a success in every aspect, more people played (even absent players came back to play +-1 matches), and not one complaint was heard about it.
All this to say the MM needs to revert to the +-1 and that will solve a vast majority of issues some players are having. Blasting people's opinions by insinuating "on a lot of government programs that give you everything for free" does nothing to add to this discussion.
I'm a F2P myself and my only complaint about lopsided matches is the fact that those who spend money on this game have the advantage. Gold ammo, gold consumables, OP premium tanks, etc vs a free tech tree... will always go to the golden player.
So in short all that needs to be done to the MM is going back to +-1.