Well at least 12 hours...
I know there are other topics very similar to this, but since they're closed I suppose I need to open a new one. From Logstash install plugin extremely slow? I learned that logstash-plugin-install can take a long time due to a lack of entropy.
My question is, why do we need entropy at all? I don't see this issue with other package managers like yum, apt-get, or pip. Maybe I'm missing something fundamental? I don't understand why fetching files requires randomness.