There is a proposal to add them to Unicode, but the process takes a while (and its the third proposal since 2017): https://www.unicode.org/L2/L2018/18275r-terminals-prop-no-at...
[0]: see the progression at https://www.unicode.org/cgi-bin/GetMatchingDocs.pl?L2/18-275... and https://www.unicode.org/cgi-bin/GetMatchingDocs.pl?L2/18-235 and https://www.unicode.org/cgi-bin/GetMatchingDocs.pl?L2/17-435 [1]: https://www.unicode.org/L2/L2018/18007.htm and https://www.unicode.org/L2/L2018/18272.htm and https://www.unicode.org/L2/L2018/18115.htm
Whereas if it was for adding some BS emojis, it would have been done in a week.
http://unicode.org/alloc/Pipeline.html
Except if you mean that some layman proposing a new emoji for addition to the Unicode standard is difficult -- but I'm talking about the big companies...