Been to CA a few times and only filtered as my GSA seemed a bit to wide to play. On another bike, I followed the locals, even the CHPys.
Learned to ride in traffic in Houston, re-introduced in Austin and sometimes find myself in San Antonio and A-town regularly.
Commuted 80 roundtrip miles daily into Austin for a few years until retirement. I rarely put myself in the position to be on a lane splitting interstate if legal when secondary roads took me the same location quicker.
I do recall some younger days on a Honda 350 coming home from Galveston on IH-45 and later on a Superglide riding between stopped cars and trucks and not going well. Swerving cars and opening doors were the norm.A Colt revolver one trip made me not be the lead dog at age 17.
Fast forward to current practices and experiences have had folks wave me by, wave me in, and if paying attention to their driving rarely a bad day in most metro encounters. Eye contact and a wave back makes things work for me. San Antonio is just insane inside the "loop" and anywhere on IH-35 for the timid. I avoid it unless I have no other choice...which is rare