I’ve owned four bows, and only ever shot 3(one was a spare) in 23 years of bowhunting, and 25 years of shooting. I’ve never done any maintenance besides wax strings, change strings, and wipe off dirt. I seem to remember a couple spray downs with a hose after particularly swampy outings. On occasion a rest bolt or sight bolt would be rusty enough to annoy me and Get swapped. I’m thinking once or twice that I recall.
I’ve averaged 3000 shots a year the last 8 years, before that about 4 years of 2-300 a year, preceded by 2000+ a year since I first picked up a bow. I’ve gone through a total of 5 strings, in 50k+ shots with a bow. Zero other maintenance.