Joke mod that makes inserters very inconvenient to use, basically requiring non-straight belts or undergrounds everywhere.

Q: Can I flip/mirror the inserters?
A: Yes, but you have to first place down an inserter or ghost, then use ctrl-C to copy it and flip that "copy blueprint". You can't flip an inserter held in your cursor, but you can flip it in a blueprint. I think this is an engine bug, I reported it here.