Adding to this, uploading audio/video instead of text means a lot more info and metadata for future adversaries to chew on and discover what you might be hiding. There are instances of people being traced to their country/city based on tiny details like the electrical outlets on the wall, geographical features and noises from nearby electronics like national news broadcasts.
What’s the benefit of having a separate DNS host? I’m using porkbun and had to mess around with its dns records to configure my email hosting. Does having separate service mean I don’t have to do this all over again If I switched registrars?