The Jan 6 rioters injured 114 law enforcement officers (leading to one death) in a few hours. The leaders expressed a desire to overturn the government unlawfully and their followers proved they were willing to use violence to do so.

The fatal Seattle shootings happened more than three weeks after the CHAZ/CHOP zone was established, and when most of the protesters had gone home. The organizers were using their illegal occupation to push for political reforms through the local government.

Those are substantively different situations.

P.S. It’s clear that the CHAZ/CHOP organizers lacked the skill to maintain security for such a large area. Whether they bear criminal liability is up for the courts to decide. (Just like it is for the Jan 6 rioters.)