Seems strange to judge merely because these people gathered. Maybe there was a requirement that those who attended had proof they had already been infected (given reinfection is exceedingly rare). The news story is lacking in information, instead just puts out the headline because it'll outrage people.
Yet it was no big deal for high level politicians in the same state, who have demanded people stay home, do whatever they want. In California the governor went to the French Laundry (look it up, it is an absurdly expensive restaurant). Why didn't the police break that up? Newsom constantly whines about infection rates and ICU capacity....but I guess everyone needs to eat ($500 per person dinners!)...well, except those restaurants that the governor forced to shut down. He doesn't eat at those. State senators flew to locked down Hawaii for a conference...no big deal. Nancy Pelosi gets her hair done in San Francisco...the hair salon is forced to shut down, Pelosi is the "victim" (?). The news outlets don't bother with the story. No political ramifications. San Francisco Mayor London Breed also goes to the French Laundry (maybe Newsom told her it was good during his visit). Breed has locked down San Francisco, put in curfews....but hey, it was a fancy dinner so she went.
Yes, these people who gathered probably shouldn't have, but maybe this event was their 'French Laundry', or their 'necessary haircut', thus it isn't a big deal.