I will have to bow to your decades of experience in this field. I couldn't care less about most of what you mention, too be honest. As an aspiring author, and one with strong opinions and also the tendency to put very unpopular ideas into my writing, I expect that my books won't be popular with certain (woke) subsets of readers, and could expect bad reviews from many people. I just don't care. 

I suppose it is still wise to take prudent steps to mitigate scripting attacks. One stupidly easy way is to have a simple "freemium" model where you can use the entire app for free, but if you wish to push your reviews to others/in public, you would need to pay a significant but not egregious amount of sats in order "go public."

This would also help fund development while simultaneously preventing tons of new bots from ransacking the system like the Goths in  Rome. If someone wanted to spend that much to leave bad reviews, cool. It's funding the app. I would still consider that a win for the overall system. 

Thoughts?