This is simply not true, unfortunately. I run a Fedora system for more than ten years, and during this period updates shoved into my system tons of unwanted stuff. I still prefer the system to the alternatives, but let me tell you, there is simply no way I would install flatpak into my system, and if it wasn't for the terrible log spam it filled my log with, I probably wouldn't even know it arrived. But it would still be calling home and look for new packages that I will never want to use.
Maybe, even probably, no one have any nefarious motives behind the latest changes, but someone decided that if I want to upgrade my system now I have to start using systemd-resolve, and while I can and probably will alter it so it won't bother me, I wouldn't be installing it on my own.
Also, Firefox is the king of unwanted changes with little to no warnings, and while technically it isn't Linux, one day an innocent yum or dnf update install just killed my customized setup, flagged all my beloved addons as unsupported, and left them in disabled state.