Not only do they install, but they immediately fill the start menu tiles with this spam.
Office 365 that is interesting because on a clean install, I still had to go to office.com to install it. I didn't have icons for Word, Excel, Powerpoint, etc. and certainly not the GBs of data already consumed by it. I'm looking at my work machine at the moment and it has an "Office" tile that I can sign in and use the web versions, but it doesn't appear to be a full Office install.
E.g., googling turns this up: https://www.howtogeek.com/243263/how-to-disable-ads-on-your-...
But as I mentioned in my other comment, for me it's been literally once and I leave 'Windows Spotlight' on, because I like the random city/nature photos it shows.