As I said, it depends on how much of the vehicle extends beyond the rear wheels as to how far you have to swing out or pull out before turning. But it’s still significantly less than with front-in parking.
And I’m not talking about skill, I’m talking about physics. I lived in a place there there was a rock wall opposite of the parking spaces and just enough room between the cars and the wall for the width of a car and maybe another foot of clearance. If the spots next to mine were occupied, it was physically impossible to pull in or out front facing without several rounds of adjustments. But backing in and out was perfectly fine. And it was only big enough for cars.
And there are plenty of spots in my city that are back in parking only (usually angled). It’s way easier than parallel parking and parallel parking is much more common. And the reason is that the cars pulling into these spots don’t have to swing into the incoming traffic lane like with front in. So they only block one lane of traffic while parking. Though most people don’t get that and swing out anyway because they’re used to front in parking.
I’ve actually been hit more times by front pulled in cars. Both because they are not at all cautious pulling out and because they mis judge how wide they should swing out before pulling in and end up side swiping the cars next to them. So it’s not even that much of a skill issue. People who don’t have skill parking will fuck It up no matter what way they have to do it.