For my phone I just prefer fewer things to mess with in general, and a smaller API surface, since I don’t want to be tweaking and untweaking shit on a device which is already so unergonomic. On my desktop I prefer Windows and Linux to mess with stuff.
Then you don't need to do anything. Just use the default.
Once again, you don't have to. The phone out of the box comes with default launcher which is completely functional.