San Francisco disagrees with your criteria for what you "should have to do."
The rules literally predate the complainant's existence, why do you think they should be able to voluntarily move there and simply violate those rules?
https://abcnews.go.com/US/video/sf-couple-fined-1500-parking...
I don't know where their property line is precisely, but it simply isn't true that they're blocking the sidewalk. The back of their car is well clear of the sidewalk. It's not even close.
https://i.imgur.com/87lHdux.jpg
https://i.imgur.com/4Ls9Upx.jpg
Furthermore, the city is waiving the fine if they build a roof over it. Would that make any sense if they were parking on the sidewalk? Building a roof over the sidewalk so they can continue to park on it? Obviously they're not on the sidewalk.
One is a monopoly corporation with State power and the other is an entity whose existence is owed to a private contract between neighbors.
> San Francisco ended up waiving the fines after the couple agreed to stop parking on the pavement. If the Craines build a cover for the paved property or a garage, officials said they can resume parking on it — in compliance with city code.
Edit: And just FYI, the kind of cover that sits in the driveway to make it compliant with code costs about $200 retail from a big box store.