To be fair, the 9000 series has the same architecture as Intel's 6000 series Skylake CPUs, from 2015.

There is no 9500K, but I assume they’re referencing this one: https://www.intel.com/content/www/us/en/products/sku/134895/intel-core-i59500-processor-9m-cache-up-to-4-40-ghz/specifications.html

Which is 6C/6T.