What's wrong with having a choice?
I guess some us are old and prefer how things used to be. Before curated feeds, awards and emoji reactions. As I said in another comment: the old internet never went away, it was just forgotten. And now we care more about how it is presented rather than the content itself. I think we have gotten so used to being spoon fed content that it feels weird for some people to have a choice. A turd with glitter and a bowtie is still a turd at the end of the day.
Lemmy and Matrix are great but have you tried hosting a Lemmy instance? It's an absolute pain in the ass for everyone involved right now and Matrix has it's own issues. They both work fine but they don't "just work".
The development of old protocols or technology didn't seize just because something new came along.
Yes, a tear of joy.