Backing in implies the spot is behind you. If there is someone following you and you decided to drive past a parking spot, stop, switch to reverse, then maybe park in one smooth motion (but also maybe not), they are going to have to back up to get out of your way, then wait while you definitely park slower than someone who is driving forward.
How? If you’re not backing into your spot when parking, you’ll be backing out when leaving the spot.
Because it takes longer to back in than to back out? Read the article that someone else linked
That’s a skill issue?
Backing in implies the spot is behind you. If there is someone following you and you decided to drive past a parking spot, stop, switch to reverse, then maybe park in one smooth motion (but also maybe not), they are going to have to back up to get out of your way, then wait while you definitely park slower than someone who is driving forward.
So… no, not a skill issue.
If the driver behind you is driving so close that they have to reverse if you back in, they’re a moron.