Comment by whstl
De-Googling is also extremely easy, I haven't had a Google account in 10 years, I use uBlock to block the ads, DuckDuckGo for search and a Youtube app that downloads from it instead of using the website.
Perhaps the only thing I use directly is Recaptcha.
The bigger problem is doing both.
It's easy to use a different calendar, search engine, etc, but it's far from easy to use an Android device without Google Services. Can be done, but banking apps, contactless payments, etc, become painful or impossible.