A lot of accounts all over Twitter have been pushing that Mojtaba is dead, others say Netanyahu is dead, others say Iran has sunk one of our aircraft carriers, etc. etc. It’s a misinformation nightmare out there, have to tread really carefully.
Even Mossad’s official account claims that Mojtaba Khamenei is dead, but best I can tell they are lying.
I think the report from The Sun is close to accurate, with him having lost his leg and is in a coma, with his wife and mother having been killed in the strike.
Regardless, it’s clear that Larijani is effectively ruling Iran, having a hold over the IRCG (mostly by being in line with their commanders). Pezeshkian is just a figurehead.