I just told everybody that I only reply on Threema
if they can’t be arsed to use another app (which is an extremely effortless task to do) then they are probably not worth staying in contact with
So if someone said you have to use their messagee of choice - Signal, Whatsapp, Matrix, FB Messager, Discord - you’d have no problem meeting them there because it’s effortless, yeah?
Post an audio file of the noise