Ever since abandoning ship I’ve maintained a negative (1 star) review every time there is an update for the app. My review contained no swearing or anything else that I think would break a rule.
This morning I went to update and found my review gone, and trying to submit a new one fails with a “Server error”. I was able to review other apps.
I think this is a thing a long time ago, I don’t use Google anymore, but I remember I rated YouTube back in the time (~2018) and it always got deleted. No matter what I described in the review, I suddenly visited the Play Store page and my review were gone.
Ah, it’s new to me, but I’m not surprised.
Really just means that ratings are worthless.