This.
I almost stopped reading the docs after the first screenshot.
Really, it gives a childish feel to the tool. I don't want my tools to have rocket or bear emojis. It makes me feel like the tool was written by teenagers.
Of course that's is not the case, but that is the feeling that I have when I see this.
Counter-opinion: I think they do a good job of visually distinguishing the section headers in the help output. As long as they're used structurally like that, I think they're great.