These are more because they basically fizzled out or the company they were working with decided to stop working with them rather than just shutting down services that people use unlike Google. Once again seems like a Firefox hit piece similar to others that have been cropping up everywhere
I’m not saying it’s a direct hit piece but it feels like people are being incentivized to write articles that paint Firefox in a negative light. Also I think a lot of these were attempts at making money outside of Google