Agree. If I'm following along correctly, it seems Calif is really the one to blame not Chaingaurd.
Calif more than Chainguard, but still Chainguard too.
Calif was obviously twitching to claim credit for their findings, and what I find troubling is this eagerness was more important to them than giving users a chance to update their systems.
Even if they ended up waiting only a day post release I would still say it seems a bit too soon. Maybe a week after. Not everyone’s system have aggressive patching schedules and PHP is soo heavily used.
All parties have that duty, but it's better if they do that at the same time.
... That's why you have an embargo.