It's just a reminder how much "right place at the right time" plays into the phenomenon of ubiquity, from Wordpress to Harry Potter to Zoom to Javascript.
There are countless efforts to make the next Wordpress out there, yet no combination of Scheme and Rust is going to make up for the critical missing ingredient of "right place at the right time".
There's no need. Most "rewrite in Rust" projects implement some basic functionality and miss the other 90%, get posted here for self promotion and then get abandoned don't they?
This is the right time. Strike while the iron is hot. People are angry and concerned. Someone just needs to come forward with an attractive way to capitalize on the situation.
But the problem is that if Wordpress disappears overnight, you're left with a sea of alternatives that's 100x larger than when Wordpress rose to popularity.
Ex-Wordpress users are just going to diffuse into all the other decent options that already exist. Or stick with a Wordpress fork that caters to them. Though note that Wordpress isn't going away. How many Wordpress users even know who Mullenweg is?
The idea of cobbling together yet another blog platform that will somehow capture these users better than Wordpress plus all the decent incumbents is some good ol fashioned developer hubris. :P
There are many examples of an entrenched incumbent being displaced by a new killer app. All it takes is the right new features and perhaps a path from the old to the new.
There are countless efforts to make the next Wordpress out there, yet no combination of Scheme and Rust is going to make up for the critical missing ingredient of "right place at the right time".