I don't exactly know what the goal here is, but if the goal was to reduce the number of symbols a human needs to look at (e.g. for confirmation codes etc) then

I don't exactly know what the goal here is, but if the goal was to reduce the number of symbols a human needs to look at (e.g. for confirmation codes etc) then this is abysmal. 48 ascii characters reduces to 40 emoji, even though emoji occupy 2-4x the bits as ascii?