Hi, MurmurHash and SMHasher author here.
The author of the linked article seems to be missing a _bafflingly_ _large_ amount of context from the last decade of people writing and testing hash functions.
Hell, Murmur2 is deprecated - they should've done their test with Murmur3. And none of the other hashes invented since then have been mentioned.
Was this article actually written years and years ago and just republished with a new date?