Erm. No? I use it and I don't remember ads that I can't disable (honestly I don't remember ads in windows except in Edge but thats different story), or some tricky interruption on windows load.
I have a distinct memory of seeing an advertisement for a windows store game in the start menu of my copy of windows 10 professional in the year 2015. The widows license was $200. I hadn't used windows in years before, and I only used it briefly in 2015.
Upd: Im about win10.