A kind observation that exclusively calling this place "Mastodon" has a bit similar energy as saying "I just sent a GMail."
"Fediverse" (or "fedi") is a more inclusive, general term.
Mastodon is just one of many software projects that talk to each other to create this multi-instance social network:
https://axbom.com/fediverse/
(kudos to @axbom for this fantastic infographic!)
There are blogs, Reddit-like communities, video instances and many more, all part of fedi.
@rysiek @axbom I get what you’re trying to say here, but it feels not very welcoming. Let’s just appreciate that all these great people showed up without questioning their terminology.
There’s a way to intro people to the greatness of the fediverse without trying to suggest they’re expressing boomer energy, and I might even suggest editing your original post to that effect.