MD5 is a (bad) cryptographic hash and therefore has entirely different goals and properties as this hash function.
MeowHash is not cryptographic at all.
> Is MeowHash faster than MD5 or not?
Meowhash is advertised as 16 bytes per cycle. MD5 is around 5 cycles per byte[0] or 0.2 bytes per cycle.
Pre-existing fast non-cryptographic hashes apparently top out around 5.5 bytes per cycle (CityHashCRC256).