This article is just ignorant. Boards like these are nothing new. PCI is apparently still used in a variety of industrial scenarios, and I count about 60 SKUs, over on ark.intel.com, from Skylake and Kaby Lake generations that have a FCLGA1151 socket and are not discontinued.
When Intel discontinues processors in a certain family, it doesn't discontinue all models of them. Some will continue to be available for use in products (e.g. such as industrial equipment) for an extended period of time, so that its OEM customers don't have to update and retest their designs every couple years, which could be cost-prohibitive for them.