Is that true? No stock tickers, no ads, no ai nags? No "news"? No weird notifications that ask for my attention? I guess no regular weird update windows would be the case, but the rest?
On any Windows release, you can switch all of those off, and GPE out the update channels for non-system-critical changes. Windows Enterprise doesn't even get the so-called 'fun stuff'.
Yes, your MDM lets you do almost everything you want to Windows. You can really tell that it is a commercial first offering, or at least used to be. And given that as a company you are also paying them I guess they don't care that much that there are fewer ads.