In that scenario, let’s say for some reason Taylor Swift really wants to give Lemmy a try for whatever reason.
Her advisors have a look around, see the userbase, and conclude it’s not worth the hassle compared to the millions of people they can reach out on Twitter, Facebook and Reddit.
Taylor Swift’s team doesn’t even manage her own forum, why would they want to go through the hassle of setting up a Lemmy instance?
The scenario described by OP is “Taylor Swift posts about the Fediverse”, but why would she care about it in the first place?
Pinging @scrubbles as they are a Taylor Swift expert. Scrubbles, do you have any opinion on this discussion?