How will this person know all of your biographical data, how can they articulate and justify to a court why they need a RO against you, someone they don't know or barely know, what evidence will they present of your immediate danger or harassment to them, how will they serve you? All declarations must be filed under penalty of perjury. Currently costs $435 to file for a CHRO IIRC.
The realistic risk is not that a random person magically files a successful restraining order because they heard I have a CCW. California still requires standing, facts, a declaration under penalty of perjury, service, and judicial findings. GVRO petitioners are limited categories, not random strangers.
The better argument is simple OPSEC: don’t advertise carry status to unstable people, hostile co-workers, bitter exes, clients, or random social-media audiences. But telling trusted friends, family, and other competent gun people is not “bragging.” It is normal, and it is how responsible people learn that CCW is available.
A lot of gun influencers, trainers, competitive shooters, FFLs, lawyers, cops, veterans, and CCW advocates are openly armed or openly pro-gun online and nothing catastrophic happens to them. That undercuts the forum-doomer claim that “if people know you carry, you’re done.”