I don't think there's malicious intent here because Organic Maps is a very small app compared to other "map apps", Google isn't afraid of them. Incompetence? Perhaps. Also, every store makes mistakes from time to time.

On top of this, the Play Store is just one of the few stores you can have on Android. Organic Maps itself can be installed via F-Droid, Huawei's store, Aptoide, etc, not to mention that you can download the apk from their site/Github and install it.

I'd agree with you if this was about Google Search or something like that, but Android apps? I don't see any monopoly there.