alt Hacker News> 2x the size of json after compression
Right and that makes sense. There is more information in here. The entire thing is length prefixed and even indexed for O(1) array lookups and O(log2 N) object lookups.
If you don't care about random access and you don't mind the overhead of decompression, don't use RX.
I think this makes sense, when you explain it like that, it might be a matter of cleaning up the docs a bit so the "why" of RX is more clear (admittedly, a README is not always the best channel for this!)