I live in a two party consent state and have yet to pull the trigger on an AI transcription service. Yogurt is the first appropriate implementation of the service in my opinion, both for personal privacy and to limit potential issues if Granola or similar service gets hacked and transcriptions go public.
I appreciate that you included a default warning for the owner to let everyone on the call know they are being recorded. It might be ideal to take that a step further and have the popup occur again if another party joins the call and should also be notified of the recording.