Yes, it 301 redirects, but again I would opt for frozen slugs. Google “may” be fine with it. But if a TL3 user goes on a frenzy… I don’t know. I as an operator of the website would not like it.
For most social media sites, URL changes will mean you lose your engagement metrics for that URL, 301 don’t help here, more complicated approaches are needed in this case:
https://developers.facebook.com/docs/sharing/webmasters/getting-started/versioned-link/