Hope it brings the point across better!
I'm sympathetic to the crowd of newcomers image they paint, but weakly. As in I agree it's annoying to have some quiet spot you had found get popular. But if you didn't own that spot and it was only quiet by chance, and it was fully public all along, OH WELL.
I do not understand their complaints about consent to have their voluntarily and actively published things be seen and reshared. They asked to be both seen and reshared by publishing publicly on a public instance, whose publicness they even control themselves on top of the controls for any individual post, on a protocol in which other servers redistribute copies of the original to all other servers and users.
Consent for all that resharing was well and truly given, yes including off platform. The only complaint they have is if any of the resharing stripped their name. Just like this blog post being CC-BY 4.0
I understand being unhappy about screenshot sharing, but my read is that even if only the link sharing piece had happened they would still be upset?
It really is a pity that the general public doesn't understand the difference today (or know what a URL is).
As in "Anything you do where anyone can sense you might be broadcast further than you thought. So either shut-up and shut-in or get used to it."
Joking aside, I didn't read OP as "big mad" about this. Just a little wistful. And possibly glad to have good subject matter for a public blog post...
For example, let's say you post pictures of your family with your children on Facebook, intending to share to friends, and then someone screenshots that and re-posts publicly.
I've never tried a public-by-default social network like Twitter or Instagram. I'd be quite annoyed if one of my Facebook friends took one of my posts and published it to the whole internet. I realize it's something that can happen, but it would feel like a violation of trust.
I also think that being able to maintain semi-private spaces on the internet makes it a safer place.
The internet norms I'm used to have public posts as available for that sort of response: if you shared it to the general world and it has a URL that anyone can load then it's fine to link to and discuss. If Mastodon has a different norm here then (a) that's going to be a hard lift because it is so different from the rest of the internet and (b) I wish people would make it clearer what the norm they're going for is!