You know with Android, you can just sideload any app you want. Still not sure why anyone buys Apple products, but hey at least you get different colored chat bubbles!
Aka if you void your warranty and crack your phone OS - something that Apple fights at every turn. If you run your phone in unsafe and unfriendly ways then you can do something Android supports natively by default.
@Stillhart yea, you can, but that means trusting the third party providing the apk. Besides that, China also has a big power over the internet. They could outright block the apps from working altogether only by cutting the connection. Especially with Threads and WhatsApp where you cannot choose any proxy within the app.