This sounds like some marketing stunt so microsoft can claim to be the most widely deployed website in the world, mostly by virtue of it installing itself to every windoze 11 desktop like most malware/potentially unwanted programs (pup).
It wouldn't be the first time they pull some shenanigans like that such as when they paid GoDaddy to switch their web parking from Apache to IIS circa 2005, and suddenly IIS was the most-used web server across (mostly parked) domains on the internet overnight as their marketing team quickly disseminated.