LineageOS[0] (and/or other non-Google OS)+F-Droid[1] (and/or other third-party app stores) allow you to avoid Google altogether. Which is nothing new.

Is that possible with IOS to avoid Apple? I think not.

[0] https://lineageos.org/

[1] https://f-droid.org/en/

Edit: Clarified my question as to what's possible with IOS.