That's why I have multiple examples in different divisions and not just HW. But way to state the obvious for all of us.
Well, what you state is true, I'll give you that, but they were the three heaviest divisions and all had extenuating circumstances; they may have been all unworthy challengers but the fights were seen as being competeive, exciting Andy high selling. Mighty Mouse vs Borg, Carioso, Elliot, Gooch, Reis, etc were seen as not being any of those things
No doubt, Bisping vs Hendo was indefensible but it was nonetheless a fight that fans wanted to see owing to the first one being the most brutal KO of all time & it being Hendo's retirement bout. Gus getting the TS on a loss also still had extenuating circumstances, owing to how solid of a competitor Gus was, who his losses came (to Rumble the Destroyer and Jones in a fight many thought he won) and the fact Jones was an F up and left DC with no choice. Both those fights turned out to be amazing fights, full of fireworks, and fights that could have gone either way.
Cain vs Bigfoot was pretty horrid but still a fight in which the juiced up Bigfoot was seen to atleast have one punch KO ability
or would be a slaughter victim for Cain-def not 5 round sparring match as all MM fights seem to be.
Mighty Mouse has continually fought "Hendo Bisping 2" type match ups but against fighters that posed no threat, unlike Hendo did, and fights that were going to draw like shit, unlike Hendo Bisping, which was the highest grossing MW fight available. And if Mouse was even going to fight Benavidez or Dodson for the third time, fans would rather see those fights repeated than seeing Borg, Pettis, Carioso types as they are just trash and not title ready. It's just become absurd: move up and let the division develop - let Cejudo learn how to put his game together, let some contenders get some more experiences, don't just pounce on them when they have nothing to offer except an easy win and poor numbers.