This "integration broken" thing though, usually I don't see. If a program is made for a given system, e.g, the DEB installer being for Debian and/or Ubuntu (and/or a few more but not worth getting into right now), one would expect it to work in these systems.

Also if you feel adventurous, try installing a system you can easily tinker with, e.g. Mint or Endeavour, in a virtual machine like Virtualbox. As you play around, don't sweat if you break something, for that's the purpose. No making an omelette without learning to crack the eggs first.