Earlier quoted context omitted.
The complaint is the fact that Pocket is now natively built into Firefox, which if you read the Pocket ToS, can be considered a violation of privacy. That, and the fact that because it is natively built in rather than a default extension, it cannot be removed, only disabled. It's something that couldn't be farther from necessary. That's the complaint here.
What's the difference between removing and disabling? Aren't they effectively the same? The source is still there to read/hack. Do you care about a few lines of inactive code? If so, I'd start the purge with Hello.
Perhaps firefox users feel the same way.