Again the 'slavery' non-sense.

Yes... So, the "insult" (if you can call it that) is being directed at the sellers of proprietary software... I'm sorry, but I'm having a hard time viewing them as a downtrodden "minority" of any sort... The users aren't being insulted; they're being described as victims... At one point in history, perhaps calling someone a "slave" could be meant as an insult, but these days it's clearly meant to describe someone who is a victim of whatever is "enslaving" them, be it drugs, boring drudge work, or yes, proprietary software...

> I don't think this is silly, as we have a group determined to associate
> 'slavery' with a whole bunch of honest working people.

Well, it's not like they just invented the metaphorical usage of the term... They are merely carrying on a similar usage that's well established... I don't think anyone takes the usage literally, and imagines that software makers are out there with whips beating their users and chaining them to desks or something... Everyone knows it's a metaphor, even if it's somewhat of an overblown, reaching one... As I said, it seems exactly equivalent to me to calling copyright infringers "pirates"... Both are outrageous metaphorical stretches of the original meaning of the words... But, neither seems worth getting upset about...