But they’re saying it feels like extortion. The problems of the web aren’t the fault of those extension developers, nor can they do anything about it besides trying to mitigate it. It’s in our best interest that they can do so sustainably, meaning charging for it. It’s not gall, they’re fighting it for themselves and making the solution available for all.

That comment places a lot of blame where it doesn’t lie. It’s like calling surgeons extortionists for having the gall to charge for treating you. Yes, ideally that should be free and available to all, and perhaps if those people had the freedom to choose (e.g. having their own needs met so they didn’t have to work) they would do it. But that’s not how the system is setup, and their skills don’t translate to fixing the problem at the root. Not all of us are cut out to be politicians (and as we all know, being well-intentioned as one still doesn’t mean you have the power to enact policy).