Alright, time to bring out the salt.
Absurd statement.
All of those complaints are possibly contradictory. If anything the fact that there is always one unit that's OP, but it's not the same unit, proves that we do do balance changes. Formations & naval combat aren't a feature of competitor RTS games either, so why pretend it should be here.
'Expected polish'? Did you somehow pay for 0 A.D.?
Look, this can be rephrased pretty easily as 'People come to the forums, dunk on the team with their brilliant ideas that are definitely gonna fix everything, then whine months later when their miraculous solution™ hasn't been adopted when in reality they have done 0 effective work for the project'.
We don't need you. No one cares about you. You're just some random human complaining on the internet right now. Your contributions to the project are nil. You don't have a phabricator account, you've never posted on Trac, you've never actually contributed anything beyond forum posts, which have obviously not succeeded at doing anything or you wouldn't be complaining right now. You've been here for 4 years. If nothing has changed, perhaps you should look inwards: your current efforts are insufficient to help move forward 0 A.D., and playing a self-aggrandising card to the dev team achieves nothing (though you did get a good rant out of me, I do love these).
Your first post in the forums was "What can I do to help?". My answer is simple. Start actually helping, or GTFO.
Wish I could enshrine that sentence.