If you think any of these will save you from the issues of cross platform development and platform specifics, in a different way from what is described by the post, you are wrong.

You will still suffer with notarization and appleness, Android stuff being pressured by Play Store policies changing constantly, and every platform/store specifics, adapting controls, form factors, gestures...

I have used these for published cross platform development. They don't solve everything but they certainly make things easier.

Some of the issues you are describing would still exist even if I wasn't using a cross platform library.