On the bonus question: Our stomach acid is very acidic. Mushrooms will not survive. Then there's the immune system if they do happen to find a vulnerable spot. No.
Respond unapologetically. If there was a time sensitive subject, thank them for their patience/understanding. If they have a problem after that, they will either let you know or not - deal with it then (provide reasons if you wish, not excuses).
People are often way too focused on their screens all the time, we need to walk all this back a bit.
That is a complex thing. Best way to tell is in person, use your instincts. Beside that it is often a pattern of behavior; including (not limited to) not pretending like they (or life) are perfect, reciprocity, empathy. These are the first to come to mind, will let someone else take the baton.
EDIT: Seriously though, the chart is convoluted. If you like to game, you will always end up with Bazzite or Nobara. In theory you could also add SteamOS, right?
Still cannot really decide which distro to try sometime soon. There is so much information out there, much of it opinionated.
Parts are, rest will be. Mr. Skeltal has spoken, doot!