`apt-get -q=2` hides installation error

[Flashwalker]

apt-get -q=2 option (in install action) hides installation output/errors which introduces a misunderstanding.

e.g. without -q=2 user can find what is wrong: apt-get install audio-recorder:

...
The following packages have unmet dependencies:
 audio-recorder : Depends: pulseaudio
E: Unable to correct problems, you have held broken packages.

and with it: apt-get -q=2 install audio-recorder:

E: Unable to correct problems, you have held broken packages.

So user cannot understand what happens when he tries to install the application and gets fail. And the ppa .list file is deleted immediately after script gets error exit status. Therefore, the user cannot find the installation problem until he adds the ppa manually and run apt install