Having visited many such sites, the recurring theme and complaint is that many public universities seek to hide or obscure their salaries.
I haven't done extensive research, but that doesn't seem to be the case. Again, the entire UC system publishes every salary. That may vary from state to state.
In terms of "hiding:" Given the privacy issues of releasing the name and salary of every employee in a state university system, I'm actually surprised anyone publishes those details. It's certainly not something we normally expect to see.
So, allow me to clarify and expand on the objection.
1) We don't apply this standard to private education, which is significantly more expensive. E.g. UCLA (which is in an expensive city) charges $12,000 a year for tuition; USC, a private school also in Los Angeles, charges
$46,000 per year for tuition.
So you tell me, why is a private university nearly four times more expensive than a public university?
2) Simply pointing at some salaries and saying "Look!" doesn't give the whole picture. You'd need to break down the annual costs for instruction, facilities, support staff etc over the course of the past 20 years, as well as changes in state and federal funding, in order to say "the increase in costs is due to X, Y and Z."
You also don't indicate competitive salaries for these rather elite positions
3) Again, pointing at some high salaries doesn't take into account what those professors and instructors actually do. A medical researcher who nabs a multi-million dollar study, for example, isn't bleeding the university; they're actually generating revenues.
Also, different departments have different tuition rates. E.g. medical students have to pay a $20,000 supplemental tuition.
At the very least, you haven't substantiated your claim yet. You're just getting shocked by big numbers, taken out of context for what those individuals do, or an awareness of competitive wages.