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.
Regarding your actual review contents, you know you can already use any app with Reddit, right? You’re not asking for anything new there.
What Reddit iirc took issue with and placed a paywall on was too many requests with the same API key. Because developers would hardcode their own API key into the app, so every person using it was sending requests as them.
If you use your own API key, you won’t run into any trouble with their API pricing. It’s completely free. Many people have continued using Reddit with third party apps by changing the key to their own.
That’s a kludge which they only tolerate because not many people are doing it - if it were really that simple then most apps would have continued development and just made each user paste in their own key at first launch. (With instructions to generate it of course) But that’s not what happened.