We are going around in circles. Of all the examples, Dave Gnukem quite obviously infringes the trademark. Again, just because no one sued them doesn't mean it's not succeptible to a trademark infringement claim if the IP owners wanted to sue.

While I am aware they claim parody law exempts them, see the enforcement of other brands (e.g. Starbucks) and see how far that goes once it gets to court.

But I don't think I'm going to convince you, and I don't think you are going to convince me, so I'll just disagree agreeably and this will be my last message.