I asked people to consider how "piracy" can actually help establish corporate dominance of proprietary software or at the very least not challenge it.

You want to talk about "deeply unserious" since you've taken it there? Piracy is a deeply unserious term. No one is stealing anything. It's just copying the program and distributing it in violation of the program's license as well as cracking or breaking whatever DRM or copyright protection mechanism may be built into the program. It's done out of cost, breaking anti-user DRM or for the crackers own profit. Piracy was created as a term to serve the purpose of doing what you think I'm doing with my "freeloader" remark: ostracizing people and punishing them.

If you're going to tell me that "it's reclaimed" or "everyone uses it so its okay" then this conversation is over because I have nothing more to say to that.