“What’s wrong with it,” you might ask. Clearly, this is well-intentioned, and meant to be tongue-in-cheek. But let’s take it seriously for a moment, and look at it as if it were designed for practical, educational use.
The real problem with it is that most people don’t say these words metronomically (and/or consistently) in everyday language, therefore making teaching with them unnatural! Prosody is out the window. Sure, “Sasquatch” is two syllables, but do you really say them with equal weight and duration?
And don’t even get me started on “Want some cat antlers?”