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.