Re: they may offer a worse experience on Google sites
They are instilling learned helplessness/dependence. They are positioning themselves as feudal lords: "come within the confines of my castle's wall, I will keep you safe, and don't go outside because there be dragons, and thieves, and murderers. You can only trust me to keep you safe".
And once you start believing that, you're (quite literally) a captive audience.
It's not even only google's fault; as an industry we have been extraordinarily bad at educating and empowering those who use the things we build. From the get-go, there were folks in white lab-coats huddled in front of a big iron telling that young'en who wanted to use that machine as well that "this is a serious machine, for serious people, you need to know very advanced maths, and logic, and stuff, you are too dumb for this. Also, you need a white lab coat which you don't have, so go on, off you go, let this be for serious people, don't fret over this because your tiny, little brain would never understand any of it anyway".
The result of this is that (normal) people file "how computers work" in the same mental cabinet as "stuff I couldn't possibly comprehend so why even bother" - which in the end is a huge disservice to them and to the field.
We've been practicing this horrible attitude continuously for the entirety of the existence of the field. We continue to do this to this day and cement it even further with things like forced upgrades, and relentless patching that we don't explain except for "if you don't patch, then bad things will happen to you, and you don't want that, do you?" (this is - I kid you not - a verbatim quote I've seen in an e-mail sent around a large-ish organization to justify why it enforced windows update on its machines) and 'security alerts' that just scare people.