It's not really "big tech slavery", cmon. A large majority of bots on the internet try to fake their User Agent to pretend to be someone else. Unfortunately, your browser does the same. When they compare your browsers signature with the expected user agent and real user agent, they find discrepancy and flag your browser as suspicious.
The real solution is to only modify your user agent for the MS apps you have trouble with, and all your captchas will disappear.
No they don't because I had them too before I started using M365 and had to edit the UA. Maybe not as much, but I think the tracking protection also has a lot to do with it like another poster said.
The real solution is to only modify your user agent for the MS apps you have trouble with, and all your captchas will disappear.