The Financial Times recently changed their abbreviation for million from “m” to “mn” to help screen readers. They would typically read an m suffix as metres; I guess the FT chose mn rather than mm so that screen readers would not say millimetres instead of million.
I’ve seen that use for sure. Perhaps a little telling we’re talking about blockchain tech and that’s what people are using. Is it really about a fast distributed transaction log, or… is it about the money first.