This is flatly untrue.
It preinstalls Spotify, Disney+, Instagram, Facebook, Tiktok, and a tonne of other tools.
A list with screenshots:
https://www.digitalcitizen.life/windows-10-bloatware/
If you want to argue that preinstalled links to 3rd party websites, prominently displayed in the Start menu, do not count as "ads", then you are acting in bad faith and your arguments can be dismissed.
A bundled link to external properties is an advertisement.
That said, if the OS is aggressively pushing recommendations for their first party news, videos, and search engine, and every one of those things shows 3rd party ads, I don't think that single step removed absolves win 11.
Yes of course it was. The only reason.
Delusuional.
You think some conspiracy created Ubuntu so people can point to the Amazon thing?