What does disabling the app actually mean in this context? I don’t think it’s unreasonable if Apple is preventing them from using Apple owned toolchains / softw

What does disabling the app actually mean in this context? I don’t think it’s unreasonable if Apple is preventing them from using Apple owned toolchains / software / any signing that Apple provides. Can they, in theory, opt out of the Apple ecosystem entirely, root the phone and develop their own software outside of Apple entirely?