No sympathy. Park at 45* across two spaces, even astride smaller motorcycle-sized spots, and you have lost all rights to complain about anything.
How do you know the person in question isn't renting both spots? And unfortunately renting two spots is often a requirement in Europe for example because the lot sizes tend to be so small that it is impossible to park with a wide car otherwise.
https://old.reddit.com/r/Justrolledintotheshop/comments/j9ji...