Maybe it joined video automatically or accidentally? I normally wait until I'm ready to hit that join button, but most meetings at least make you do the extra step to turn on video. Either way not a good look for a job which requires lots of video calls!
Depends on the software and, maybe defaults, when I join with Google Meet, I default to on. Which causes me to screw up on the occasions I use Zoom because I have it set as the opposite.
