Not sure what you are trying to achieve here. Do you want to stick it to the Man?
The software that is processing your communications will spend extra 0.01 seconds analyzing the data. Is that some kind of victory for you or something?
I started to make a witty post implying that you just signalled for some sort of terrorist attack using an encoded message, then I checked the calendar and posted this instead.
Sure, use Signal, and Tor, and others -- if you want your communication to be preferentially screened by every single three-letter agency.
BTW this is not to disparage any four-letter agencies, eg. GCHQ. They do awesome work, which I do appreciate very much.