Telemetry problem.

Why in about config this telemetry entry is blocked toolkit.telemetry.enabled;true?
This is needed to completely turn off telemetry in the browser. In Firefox 71.0 I have telemetry completely turned off, and in Comodo IceDragon you need data about my equipment and other data. And I don’t agree.
The fastest IceDragon, but netflix doesn’t work anymore and spies on me.

Hi kitaro

Thank you very much for your answer.
The last stable Firefox can be turned off telemetry Screenshot by Lightshot
Telemetry setting Screenshot by Lightshot

Icedragon bug netflix Screenshot by Lightshot
The browser is not supported and this is a problem for me.

Ice Dragon now only 65 ver.
Firefox 71 – this option is locked