But in the client is the only time their code touches the actual unencrypted message data. Also a lot of the data you mentioned will also not be available if y

But in the client is the only time their code touches the actual unencrypted message data. Also a lot of the data you mentioned will also not be available if you don’t use their client, eg: if you use Signal client then Facebook won’t get your location all as that’s not part of regular text message