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I think this is key, people are conflating "Mozilla is allowing the option of running a separate, external, close sourced, plugin" (which as you point out is no different than Flash/Silverlight) as being "OMG Mozilla is closed source now and ever single webpage has DRM now!!11"
I thought the GP's premise was people saying "We're going to talk about this unrelated issue rather than the current one". I made no calls as to the importance of either.
I think GP's point was people will continuously talk about something from over a year and a half ago and completely ignore whatever the current topic was. Kind of like what you just did.