Why is .lzh format still popular with japs?

The rest of the world uses .zip and .rar and these retards still seem to use .lzh a lot.

It's not because the format itself was constructed by a "fellow" Jap is it?

Compression's purpose is to compress. Zip hardly compresses. It's used in lieu of a setup package to hold multiple files, since you can't download a folder (can that ever be changed? fuck MS)