If you can, please mark all nazi/freezepeach reviews as unhelpful. The scumbags are boosting those, so turnabout is required.
https://play.google.com/store/apps/details?id=com.keylesspalace.tusky&showAllReviews=true
Leaving a positive review is also good, of course, but the "mark unhelpful" is safe.
It could also qualify as spam, so maybe use that instead - it's reasonable to assume Google cares more about that.
Pls boost