The problem is that the removal of parking requirements typically doesn't address the parking-lot scenario depicted here. It's often a developer handout that results in a degraded standard of living for existing residents in the neighborhood around a new development.
Let's say a developer builds a bigger, taller building than what was there previously and adds residents. If they're not required to include sufficient parking, the new cars will flood the surrounding neighborhood, and existing residents will now have no place to park. This depends on the type of neighborhood, of course, but it happened in mine in Chicago. Not being able to just come home and go inside, but rather have to drive around and around in ever-larger circles (in the winter) to look for a parking spot because some alderman got paid off by a developer to screw his constituents... that's the reality.
We're seeing this in L.A. too, where local politicians will sell out to developers and publicly excuse it by pretending that parking creates cars and cars = bad. L.A. is a giant county masquerading as a city, and it's never going to be Amsterdam (you hear this asinine comparison all the time). Pretending that people aren't going to bring cars to their residence is absurd and damaging.
But big vacant parking lots growing weeds? Hell yeah, we have those all over the place, around dying malls and boarded-up Macy's. But what did CA politicians do? Pass laws that allow developers to destroy one single-family home and build 10 units there, overriding any local zoning or review and without local ability to prevent it.
So now we're going to pave over even MORE ground and cut down MORE trees, while said malls are still sitting there. As if the place isn't hot, barren, drought-stricken, and depressing enough.
Anyway, that's what I think of when I hear "get rid of parking requirements:" corrupt sellouts.