I'm not entirely sure I get this, so a company that will and does force other company's to remove personal data has ties to a broker and Mozilla dropped them for those ties, I mean its not bad but its definitely harsh and removes a useful service from a subscription they offered, hopefully Mozilla can at least find a new implementation or change the pricing to shadow the lack of this feature.
Edit: different article Mozilla did the right thing. I still think Mozilla should adjust pricing or implement a similar service.
Personally, these services are all a bit sketchy anyway. Mostly because they advertise themselves as the magic bullet to remove all your unwanted personal data from the internet, but ignores that this removal relies on the cooperation of the third parties in possession of your data. Most notably, this won't work if your data has been exposed in a data breach.
To me it very much feels like VPN ads. Technically a working product, but advertised in a very dishonest way.
Privateinternetaccess.com's VPN servers log nothing, and run their entire systems in RAM. If you want a VPN that's truly private, use them. They can't sell your data, because they retain nothing to sell.