[coldtea]

For one, it's a gimmick that brings attention to Mastodon, which as a foss/decentralized alternative to Twitter, is interesting in its own.

Second, it's based on a centuries old literature/poetic challenge/game, of writing a text based on some constraint, and especially with avoiding a specific letter (a "lipogram").

Third, the challenge itself, which removes the ability to use the most common letter in English, is amusing enough to people. It makes you think harder about phrasing, and solve how you express something in alternative and creative ways. So it's a kind of fun game, like e.g. Scrabble.

Fourth, besides the fun/challenge factor, exploring alternative ways of writing a sentence is something that most people seldom think hard about, but that has applications in general writing too (in other words: what you gain by working around some constrain can make you a better writer in general, even when there are no artificial constrains imposed).

P.S. How are things going in Vulcan?