There are a ton of stories about how shrewd Silva was but unfortunately... That was his job. If the guys that sign your paycheck say to do whatever it takes to keep salaries in check because your job depends on it then you're not going to want to pay people a shit load of money out of the kindness of your heart.
Now also factor in the guys that are now using that # and you'll find Pierce (Mr. Split Decision), Fitch (the most aggressive cuddler to ever make the walk), and Maynard (who was only ever exciting against Edgar or when he was getting murdered by people.) So if your job is to be a matchmaker and make exciting fights and to keep costs down then people who aren't super exciting, don't have a large fan-base, and still have a winning record that leads to larger paydays are pretty much the exact opposite of people that you really want to be in business with.
I have no doubts that he was a complete ass to fighters at times but I can also cut him a little slack because he's doing what the owners of the company told him that he needed to do.