Sure, but none of the numbers are homophones or even particularly easy to confuse (in English, anyway) when giving a location verbally. W3W marketing claims none of their words are either, but the evidence suggests otherwise...

Latitude errors are also much easier to correct if you incorrectly memorise it but know other information (country/city). But if you find out that arbitrary.word.cat gives you an obviously incorrect location, you've got very little chance of realising that actually it must have been arbitrary.world.cats

This is true, but the structure of the number itself carries a connotation to the reader to pay extra attention to their accuracy.

We expect numbers to be number-like where every little digit is important. We expect words to be word-like where plurals and sometimes even synonyms mean the same or similar things.

But bounds checking is a lot simpler.