Every feature you've listed works without forced log-in. Taking away the choice ...

sneak · on Sept 24, 2018

There is no forced login. You can still use Chrome without logging in to anything. You can also disable Chrome Sync even if Chrome is logged in after logging in to gmail, so “forced” is the wrong term.

JoshMnem · on Sept 24, 2018

You can't use Google Chrome without logging into the browser itself if you use any Google service.

sneak · on Sept 25, 2018

False. Incognito windows. You can also disable the login state sync as many have pointed out.

JoshMnem · on Sept 25, 2018

By disable do you mean use the temporary flag that is already removed in Chrome Canary?

Incognito windows are not a realistic alternative, because that adds more limitations.