Where is CLDR emoji annotation data used? And why is it not used?

[Marcel Schneider via CLDR-Users]

While striving to edit a subset of emoji data now under survey, I’ve
tried to find out where that data is actually used, but couldn’t find
anything on the internet. Most social media either don’t have a search
bar in the emoji palette and don’t display TTS names in tooltips, or
don’t feature emoji palettes at all, or if they do, the data displayed
or recognized at search doesn’t match CLDR data (neither keywords nor
emoji names), despite that platform (birdie microblogging) is reported
to implement CLDR data. It’s not a matter of using latest release as
previous data doesn’t match neither.

Hence I feel a need to ask one simple question: What is the point in
having emoji annotations in CLDR, if CLDR users are redacting that data
considered “raw data” or even disregard that data and make up their own
databases for all the locales they are supporting, so as to use fully
proprietary data and not to contribute to common efforts in maintaining
the data in the Common Locale Data Repository?

Any hints are welcome, notably those pertaining to the quality of the
data so that we can assess whether the data meets the requirements, and
if it doesn’t, what can be done to improve the quality of the data so
that it conforms to the standards set by CLDR users.

Marcel