I'd like to point out also that wordpress can install plugin directly from the UI, which is a lot more involved if it requires the whole software to be recompiled (totally different machine too)
But it’s not so expensive you can’t do it. If you cache it’s probably not even so expensive anyone will notice compared to the equivalent PHP process. And it would be a massive operational, usability, and performance improvement to the actual server.
Otherwise you’re just saying “I can’t write Go like PHP” - no shit, that’s a good thing.