There’s just a lot more space when you can move in three dimensions, so I don’t think the congestion limitations of non-flying cars are likely to be replicated. IIUC (I’m no expert) that’s one of the most attractive features of flying VTOL vehicles.

You're bandwidth-limited on a sparse serialized landing site map no matter what, and you need far higher distance margins that will eat up basically all of the dimensional advantages.

If ground vehicles side-swipe, it's just an insurance claim. If flying vehicles sideswipe, it's a Problem(tm).

I honestly think the most attractive features of VTOL vehicles are that they are from sci fi, and you can look up and see a bunch of empty space and wish you were there while sitting in traffic.