I don't think becoming a target for malicious actors is the reason for Chrome Web Store reviews being awful, see the threads I've linked to above and explore the rest of the links. Chrome Web Store reviewers are simply not properly trained and qualified to do this job, and the review process dictated by Google does not leave much room for improvement. Reviewers make an awful lot of mistakes and they usually do not listen to reason, the only thing that works is to document everything and make it public.

I've had some issues during Firefox extension reviews too, and Mozilla employees have usually changed their opinion after feedback. When they've made a mistake, sometimes they said they were sorry, which was a decent thing to do and it felt right. They talked and acted like human beings whom are capable of compassion and reasoning.

Exactly. Developers are going to submit apps to Google regardless of how bad the process is, so there’s no real incentive to improve the experience.

I don't know, I've seen plenty of abuse on the windows store. Being a default choice for tech illiterates makes it a juicy target