The comment seems to imply Gavin Newsom decided to shut the plant down-- but it's owned by a private corporation, PG&E. Did we expect Newsom to take control of the plant and keep it open? I can maybe see a case for policy change, but I don't see California being that different from other states in this regard.

While I don't like the trend of closing nuclear plants, this isn't a straightforward decision just to "keep it on", from what I understand. There were seismic concerns for the plant, which is probably a worthwhile consideration given its location in California.

Additionally, I think how the plant performed cooling (drawing from the adjacent ocean) would also negatively impact the local ocean environment, and that type of cooling process was being phased out of California more generally.

FWIW, I'm a fan of nuclear, but I think it's worth digging deeper into underlying problems so we can see what the future solution may need to overcome.