In my experience, most software offering PPAs also offers debian repositories that get setup in your /etc/sources.d/ (usually the install instructions are just to run "curl https://somesoftware/installer.sh | bash", which you should doble-check of course). Thereafter your regular apt-get update && apt-get upgrade updates that software too.

It is really not an issue in my experience. I currently have the following software installed (and updated) this way: docker, virtualbox, nodejs, yarn, skype, vscode, teamviewer and sublime text.