It's not ridiculous. A champ wanting to make money by facing a fighter who is a bigger draw and/or an easier pay day is nothing new. These guys aren't in this business to appease fans unless it makes them money -- ideally, the most money they can make. This is why Couture's hypocrisy keeps being brought up; he isn't any different. The fact that the exact same fighter (Lesnar) is involved in the title fight scenario makes it all that much more laughable.
Couture as a moral authority with his track record deserves to be pointed out as well.
He's just the wrong guy to say anything about either subject the way he did. If Couture said something along the lines of "I was coaxed out of retirement to fight at a weight class I hadn't been in for years because the owners wanted to capitalize on the Rocky Balboa movie (nostalgia for old fighters; comebacks, etc) that came out around that time and they hated the guy who was the champ and they thought I was his kyrptonite" or something that alluded to some of the favoritism he's been shown at times, it would be a more balanced perspective.
IMO, if you read between the lines, Couture seems to be hinting that "everything was different in my day," which is a farce. It's always about money and always will be. He could have even summarized everything by saying, "This isn't a perfect world. It is driven by money."