

My head canon is that Paul Stamets has no idea who the fuck Musk is, and that he didn’t want to interrupt Captain Lorca’s seemingly encouraging speech. So this is definitely a slip (in my head canon) since Musk is definitely a prominent historical figure in the Mirror Universe.
The message was on Xitter from Andy Yen, but it was highlight on Mastodon by Jonah from Privacyguides.
The official Proton account also tried to defend Andy Yen on Mastodon (and later deleted it).
Here the link to the thread on Mastodon.