There is a debate to be had about how far this is morally acceptable. If you‘re trying to promote your nonprofit and ask friends to ask their friends to look at it I‘d say thats fine.
But asking bluntly for fake reviews is not ok imo. I‘d report this person immediately. I‘d rather make a nice post on every social media platform that fits my topic and plainly ask folks for feedback. This just seems lazy and uninspired.
Generally, yes. I'm not gonna infringe on someone else's actions as long as they dont endanger someone (themselves or other) because its not up to me (or anyone else) to be helicopter parents and "correct" everyone else.
As I said, I would report this person immediately.
imo it's fine if its something like sub for sub on youtube, or follow for follow on twitch, where you're manipulating an algorithm, but with reviews it's misleading people and not okay.