The title here is slightly misleading; Adobe refused to renew it's licensing deal with Pantone because the main way Adobes products are being used these days is digital art & design. There's no incentive for Adobe to keep paying licensing fees to Pantone (not to mention that the Adobe version of the plugin hasn't been updated since 2011 and is alledgedly very inaccurate and incomplete), so they're cutting the feature…
"We didn't renew our license with Pantone because it was eating into our profits, so you are on your own now. We also changed said colors to black, to make it easier to spot what you are missing. Have a nice day".
Instead they've written some corporate speak, and let the thing roll by itself.