[deleted] He also tells readers that he recommends not to install sandboxed google play services because it "defeats the purpose of de-googling." The link was just a reference that Fdroid has some security issues. All of my questions are referring to the book.
[deleted] Michael Bazzell recommends to not do it and implies that if you cannot "live" with out GPS
then GrapheneOS may not be the operating system for you.
The second quote especially baffles me. Granted, I know that's not what you're saying, but what Michael says in his book (I haven't read it, but I'm taking your word for it), but it makes absolutely no sense to me.
If we assume that someone needs to use Play Services in order to get their work done, is he telling people to use Stock OS instead where Play Services has privileged access? That sounds like bad advice at best, and downright dangerous advice at worst.
People can forgo Sandboxed Google Play, and we can talk about the pros or cons of that and different configurations based on that (such as using Sandboxed Google Play only in select profiles for select apps as needed), but this rhetoric makes no sense.
I won't really comment on his advice to use F-Droid instead (which I disagree with), except to say that it is quite sad that currently Play Store or F-Droid are the only options that seem viable. I'm hoping that changes in the future so that folks can get the best of both worlds.