After creating a fresh installation of Ubuntu 24.04, I installed DEB Firefox from APT by following Mozilla’s instructions from here. But I noticed that it was secretly replaced with Snap Firefox. I was able to verify this by checking the About Firefox page. This is the third time I noticed this.
I must have hit that 1% last time. I assembled a new PC, wanted to install debian and could not get a login screen after installation. At that point I wanted something that just works. I installed Xubuntu and had the machine ready right away.