When is an ad an advertisement and not a recommendation? Microsoft clearly likes to use the term recommendation for what others may see as an advertisement.
There are recommendations in the Start menu, Settings app, Lock screen, File Explorer, Get Help app, and other areas of the operating system already. These are often not that useful. App recommendations in the Start menu are limited to Microsoft Store apps.
Now, Microsoft is testing recommendations in the Microsoft Store app. If you never use the app, you won’t be exposed to these. If you do, you may notice recommendations popping up when you try to use the built-in search.
First spotted by phantomofearth on X, two or three recommendations are shown whenever search is activated in the official Microsoft Store app.
I think this overstates the “you must futz with it” of both Android and the common Linux desktop. Broadly speaking, both are pretty much fine out of the box for most people and the stuff they are likely to want to do to Windows is similarly easy to do with a likely default desktop environment (I’d say KDE more likely than Gnome, since Gnome opts to try not let you do a lot of stuff and demands you have to do “weird stuff” for some customizations). You don’t have to play with “expert tiling-only window manager N” or go off the deep end tweaking to the Nth degree.
Same with Android, though with even less likelihood of anyone bothering to go “off script”. 99% of Android users never touch adb, never do an oem unlock, never boot an aftermarket OS load.
The fact that you can, does not imply you must.