Good: ANSI color code in command lines. Less good: emojis in command lines. Why? Unicode support is _still_ not universal, which means it isn't great for portability. It's a tradeoff that might not always be worth it. It's good to think about, at least.
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I used to work on a project that wanted to be portable enough to run on mainframes too. We couldn't have nice things (modern programming tools) on any platform. Emoji are a bit gratuitous, so your point has validity. We do need pressures to modernize though.
Yeah, that's very true! - I wasn't trying to be prescriptive, but more point out that the choice of using emojis comes with tradeoffs. I think tradeoffs are good to be aware of! (:
