I usually wait till they complain about something related to one of the big corporate platforms, then throw out a “you know, the fediverse has an ‘X’ now, come join us!” Just replace X with reddit/tumbler/youtube/etc, whatever platform they were complaining about.
Alternatively, I’ll share fediverse links in the process of showing memes to people.
I came to say the same thing about Camellia sinensis, thinking “am I about to be more of a tea purist than is even encapsulated in this chart?” So I’m glad somebody else got there first lol