It is so amazing that the CJK Unified Ideographs block is still being extended to this day, even though I do know many intricacies of encoding those characters, like Z-variants and normalization rules and such. How many of these characters are left for encoding? I genuinely have no idea!
It's probably academia catching up with historical documents digitised to Unicode. For CJKV any character can get added if it is found on an old scroll or something.
Of course, but I mean that there are only so many such historical documents in the world. So there is a limit that the CJK Unified Ideograph block can be extended. I'm surprised that the limit seems to be way higher than I initially thought.