I see a lot of energy wasted in not a constructive way.

It's a choice to start conversation/harassment or whatever.. so it all is in who starts it and on which tone and purpose.

You don't like Marie, you don't comment on her note at read what she writes.. I don't see the need to start it at all. Unless that's your purpose, enjoying all the negativity and non constructive talk because there's no intention of having a real one. It's just taking a position without manners or being a shit head.. she could have just ignored him? Yes.. would I ignore him if I was her? Very likely I would reply "GFY" at same way and than just blocked..cause again, too much energy wasted for nosense (people).

Also now I almost feel like I am wasting my time trying to explain myself on this topic... Pura Vida.