It is a shame that the majority of these won't been seen by common devices. Google has stopped work on their Noto fonts initiative, and modern versions of Android are stuck with pre Unicode 10.

Apple has been pretty good at adding Emoji on iOS, but macOS seems to be left behind.

As for Linux... Installing the Unifont gives coverage, but most distros don't seem to have a way to update base level fonts.

I'd love to be proved wrong about any of this. But is seems that the majority of systems don't care because their native scripts are already supported.