Short answer is yes, Long answer is by how much depends on tos and what keep and use, and really what you consider risk.

Before things were relatively mild, picture your jitsi meeting is a public cafe with a security cam. Someone would need specific info to see you at the cafe or get footage from the cafe owner. Now with ai training anything said or displayed could be used as training. Voice, speech patterns… Its a wild scale best to find reputable companies or selfhost