I'm not into Warhammer, but out of curiosity, how did they check that? Scrape a sample off each figurine and run it through a mass spectrometer or something?
Official paint was never a requirement AFAIK. Parent comment has probably confused the Battle Ready rule, which basically says the model and base must be completely painted with multiple colors and shading, but doesn't care about what brands of paints you use.
Of course. That way they can sell you the official paints.
Fortunately, it seems they’ve dropped that you’re required to use the official paints if you want to enter a sanctioned tournament.