"The urgent task is to ensure that global warming remains below the 2°C threshold, with the aim of returning to 1.5°C by the end of the century."
I disagree it's impossible but I agree it is difficult, and (as I said) the damage will be done.
Nope. "damage" will be done. "The damage" implies "all of it", and that is wrong. Going back to 1.5 actually means less damage than not going back. So "the damage" is not "completely" done.
That's a different claim, but also no. Let's imagine we go 1.5 -> 2 -> 1.5 in a few decades (and keep in mind capture is more difficult, so the 2nd transition will take longer), compared to just 1.5 -> 2. In the return case, we stress all the ecosystems twice by change, rather than once. So it's not at all clear it's less damaging.
Are you just making this up?
I am not saying I have all the answers, I am just not convinced that "returning" is strictly better option.
It's not "just" that people will go to the beach more in the north during their holidays, you do realise that?