Turning webcam on/off during interviews?

My approach for virtual interviews has always been to join the call without my webcam on. If the recruiter/interviewer has theirs on I'll turn mine on, but I try and read the room.

I may be overthinking it, but would not having your webcam on during an interview reflect poorly, even if the interviewers dont? I always assumed no, but starting to question if I should just always keep it on going forward.

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