For what it’s worth, the current version and version one were both designed in a way that they could be switched to a subscription model.

When you make purchases from their store they’re available within the app based on your account, if you sign out you’ll lose access to them.

I know with V1 you could manually download your assets, I’m not sure what the status is for V2 on that.

I share your scepticism since the Canva acquisition.