Does Hut8 still mine bitcoin?
If you go to their website, it seems they’ve scrubbed Bitcoin from the site and only talk about High Performance Compute and AI.
Discussion
On one of the recent WBD podcasts they discussed this.
Not sure if they are or are not mining BTC but it sounds like they understand the direction we are headed.
It sounded to me like they are running the playbook in Life After Google.
Good move, most likely. 
AFAIK although they've diversified.
Roughly 1 EH.
Anthony is great on mining.