There's Godwins law about comparing everything to nazis. Will there be someperson's law of completely misunderstanding what a word means?

It was sarcasm. Pokemon has been called a fad since it first gained popularity in 1998.

Though to be fair the Pokemania era of the early 2000s was a blip, the same way Pokemon Go had a short-lived popularity surge in 2016.

Pokemon is enduring.

You might be interested in Poe's Law [0]

[0]: https://en.wikipedia.org/wiki/Poe%27s_law

Unfortunately, Goodwins law has lead to many people fearing to point out obvious fascism.

Reversal of the Law: Mike Godwin himself has stated that his rule does not discredit efforts to make valid comparisons, particularly when democratic institutions are under threat.