nout on Nostr: Each of the clients defines how you experience the Nostr network and the protocol. ...

Each of the clients defines how you experience the Nostr network and the protocol. That's the point of clients - they run on your device and you are in charge of them. Now I think you got caught on feeling that someone tells you how you should experience something. But I don't think that's what's happening here.
In this case someone made a packaged opinionated experience available to you and it's up to you whether to use it.
And so I think if you like Amethyst, then you should just continue using it.

Either way there are other options on Android, like Plebstr, Iris or even using one of the PWAs.