Also, I don't see how fighting a potential monoculture with an actual monoculture is a solution.
For further reading: https://infrequently.org/2022/06/apple-is-not-defending-brow...
I personally do not support apple not allowing other browser engines, just as I do not support them not allowing other ways of installing apps besides the app store, but I also think that them allowing other browser engines will ultimately make the web worse as a side effect.