I think they are wasting their time… but it’s their time. They get to decide what a valuable way to spend it is, not me.
Placing people on different sides is unnecessarily divisive. Consider that folks genuinely want to work together and make things better.
How frequently does that happen compared to existing maintainers choosing to incorporate Rust? Off the top of my head I think all of Linux, git, fish, librsvg, and Python's cryptography library involved existing maintainers choosing to use Rust as opposed to "Rust people" "worming their way" into projects. Did you have other projects in mind?