[mturmon]

You would have to read all the way to the end:

"Today, Pyrex is manufactured by World Kitchen, which licensed the brand from Corning beginning in 1998, thus giving future generations the chance to grow up with Pyrex, too."

This omits that current "Pyrex" is, as you say, not borosilicate.

According to wiki:

"World Kitchen justified this change by stating that [tempered] soda-lime glass was cheaper to produce, is the most common form of glass used in bakeware in the US, and that it also had higher mechanical strength than borosilicate—making it more resistant to breakage when dropped, which it believed to be the most common cause of breakage in glass bakeware."

[hunterrible]

The piece does say this: "In 1942, the Museum of Modern Art praised the functionality of Pyrex designs by featuring several products in its exhibition “Useful Objects in Wartime under $10.” Around the same time, the company was developing a line of tough white dishes for military mess halls made from tempered soda-lime instead of borosilicate, making them less heat-resistant but also less likely to shatter when dropped. After World War II, this military glassware evolved into the brand’s popular Opalware line of kitchenware."