That is the main reason behind it. And I really doubt anyone in this thread that would be releasing wild animals has any of those skills, nor would they be willing to quarantine and observe raccoons or other animals for 10 days.
Also, a Raccoon's home range is something like 300 acres, so taking them to a park 5 miles away isn't really natural.
I would say for anyone who doesn't want to kill them, this is the best option.