Do therapists gossip with each other about their clients?

Do therapists normally gossip with each other/their friends about their clients? Serious question - I know therapists are supposed to keep everything you talk with them about confidential, but in practice, is this normally the case? I am asking because I have two friends who are therapists who gossip with each other (in my presence) about their clients all the time, complain about how annoying they are, and tell each other how they respond to their clients in relative detail. They never reveal personal identifying information (like names, or anything like that) - so I don't know if that's allowing them to chat the way they do.

TBH they way they talk about their clients with each other and other friends who are not therapists was one of the biggest reasons why I was hesitant to start therapy for myself. The idea that my therapist could be going home and making fun of me to their partners/friends made me feel ill.