The only place I’ve ever seen ads on my MacBook is in the App Store, the iCloud section of settings and on Apple’s website, all of which it makes sense for the adverts to exist. Oh wait I may have seen one as a precursor to a YouTube video but sans ad-blocker that is standing regards of OS.
I personally love those features as a developer, I don’t need every type of port pretty much just one would be enough in a perfect world we would use wireless to interface all peripherals and media items like cameras
This is just a clever safety feature so that those that don’t need it don’t accidentally mess around with things, if they’re curious they can look up what it does.
As in my other comment, the display menu in settings has options titled more/less space which increase or decrease the size of text and windows on screen, this is accounted for.