ZERO times has anyone even mentioned disk/memory footprint. Performance maaybe, but no hard limits were defined in any contracts. And even those were "these things have to be processed within 24 hours because the law says so", not microsecond precision.

Even Obsidian is 440MB. It's a markdown editor with a built-in javascript scripting system. There's no reason for it to be almost half a gigabyte. Zero people have checked the directory size and went "nah, too big, won't use it".