I'm used to simply using a single dash - and I am surprised that anyone who isn't an AI would feel strongly enough to insist upon the em dash character that they would use them deliberately. I will admit the use of a dash (really an em dash in disguise) in that previous sentence felt clunky, but I just felt I needed to illustrate. I mostly write text in text boxes where a dash or pair of dashes will not be converted to an em dash when appropriate, and I often have double dashes (--long-option-here) auto-converted to emdashes when it is inappropriate, so I really dislike the em dash and basically don't use it. Doesn't really seem to be a useful character in English.