I ran into this before, and figured out what’s happening. This isn’t a glitch, it’s entirely on purpose: what they do is say “word X is 123456789 syllables” on the page. Google indexes that, showing a useless summary.
But if you go to the actual page, they use javascript to determine that you’re not Google, then hide all the wrong numbers, making the page now look like “word X is 3 syllables”.
Why do they do this? Because otherwise you wouldn’t go to the page. They only get advertising revenue if you click the link, and if Google extracted a correct summary of the page, you’d never click it.
