That snopes article is one of the worst ones I've ever read. Snopes does some good work, but they also do some really terrible work, and this is a good example. The writer, Kim LaCapria, is clearly way out of her depth on technical topics.
Notice that the article doesn't provide one single piece of evidence of its own. Kim offers only a contorted narrative about FDA regulations and manufacturer denials, and complains about being unable to find "alternative sources". But the widespread use of lead pigments in ceramic glazes and paints is so well known, and so easily verified, that this is a bit like complaining about alternative sources for the color of the sky.
Tamara's XRF results can be easily verified by anyone with access to an XRF machine. You can take your dishes to any county health department and have them tested by XRF, and you'll see similar numbers. This is what I did with my old Lenox dishes, and the XRF revealed over 5000 ppm lead in the surface glaze. I've had dozens of pieces tested this way, including pyrex, corningware, radom kids cups, etc, and the numbers I get match Tamara's. And of course they do. It would be stupid for anyone to fabrinate this data, because it's so easy to verify.
Anyone can buy a LeadCheck swab for a buck or two and test for mobile lead at the surface. This is mostly how I test the stuff in my house, and it's how I know that my contaminated dishes were an actual poisoning hazard. If the lead comes off on a swab, then it will come off on your hands, in your food, and in your baby's mouth.
It's a similar story with cords and brass plumbing fittings. The facts of lead-based heat stabilizers used in PVC cable jackets, and the high lead content of traditional water works brass, are as incontrovertable as the sky is blue.
Kim LaCapria at Snopes doesn't seem to understand any of this. There's no indication that she even knows what XRF is, or how widely available these devices are.