[extraduder_ire]

IIRC, you can still add those repos. The PPA system just makes it a little easier to add them.

[geokon]

it's one of those things that will probably work most of the time

PPAs are built against Ubuntu packages as dependencies - which usually but not always match Debian ones. Easy way to get subtly broken programs

[personomas]

Can you explain how better? A link to an example maybe

[NikkiA]

https://vitux.com/how-to-add-ppa-repositories-in-debian/