Bunk.
The last three Yellowstone eruptions have been spaced roughly 600000 to 700000 years apart.
If the next massive eruption is next year, it won't be early; if it doesn't happen for another 10000 years, it won't be late.
That thing will blow when it is ready.
Statistical probability based on past occurrences is less than convincing. A major bulge combined with increased gas output and some +5 and above earthquakes coming after the current flurry would be worrisome however.