Seems that you have two options:
1- move on and move your car or pay your own landscaping guy. this is the silent option and also not the one where you win.
2- you fuck with these people. I don't know how exactly, but going to these meetings and just being annoying seems like it'll be fun. Plus, you might get to meet a real life Karen who cries because she has to wear a mask and can't hold babies!!
Seriously though, go to these meetings. Move your car for now if your landlord is being annoying about hearing back from HOA, but definitely become a "part" in the "community". Convince people on the down low their lawns look like shit but you "know a guy" and get rid of your landscaping problem.