ssdclickofdeath's forum question said:
"Many people think of a program being free a plus, but don't mind using
proprietary software. Why should proprietary software be avoided?"
Your question strikes me as more of not knowing about free software and
wanting to learn more. Do you really see that as going against the community
guidelines? They are are at
https://trisquel.info/en/wiki/trisquel-community-guidelines if it helps. On
the other hand, "You should install Adbobe Flash. This is exactly how you go
do it: Step 1...." would clearly go against #5. People already have ways to
get help with proprietary software. They don't need that here. We should help
move them toward freedom, not with running proprietary things.