The move is necessary to be able to add .zst to 7-Zip.
Starting with version 24.05 7-Zip can unpack ZSTD archives.
What's new in 7-Zip 24.01: 7-Zip now can unpack ZSTD archives (.zst filename extension).
What's new in 7-Zip 24.01:
7-Zip now can unpack ZSTD archives (.zst filename extension).
Revised 7-Zip section.