it’s definitely possible to be unprofessional/toxic while still doing something that you’re legally allowed to do (under that license)
That was my take on it. Nothing I read indicated that the Pushpull devs had done anything wrong per se, other than being bad at PR and the selection of someone to do said PR.
On the other hand, the sentiment coming from the Pushshift side was staggering to me. I mean the licensing wasn’t even ambiguous, and who makes their source code publicly available and then complains about someone using it?