I've been writing Java utils for the terminal since forever. Mostly because I was extremely familiar with Java. It's never been really slow unless you were loading shitload of classes, like apps that package the entire kitchen sink do or as Clojure does for example. For Clojure now there's Babashka: super quick.

And GraalVM compiled Java is more than speedy.

Back in, say, 2005, two decades ago, on computers from back then, sure, the java startup time from the CLI were noticeable. But on today's computers?

Nowadays when it comes to terminal apps I wrote both Clojure (Babashka), Bash and Java (recently I needed something from a .jar and had no convenient Clojure wrapper and didn't want to bother, so I just wrote my CLI app in Java).

Maybe, maybe, maybe that I do feel the startup time when I run my CLI Java app on Raspberry Pis. Raspberry Pi 2 and 3s that is (for I don't have any newer).

Startup times aren't an issue. But there may be other reasons to prefer other languages to write CLI apps.