I can name you tons of things they fix over 5 years i own over the air. The ratio there is very very net positive towards a very good , well polished system, not an other way around.

They even fixed once a semi broken hardware for me. Camera power started acting up. I called tesla they said you can come to service to replace or wait a bit we will release OTA that will decrease a power consumption, in 3-4 weeks they fix my custom problem without going to serive