Watchdog groups should only exist for a short period of time and for a specific purpose. If it is open ended, it will inevitable arrive at an extreme.

In a sexist society, if I was paying you to find sexism against women, you'd be able to find obvious examples of it. But as society changes and societal sexism against women disappears, what are you left to do? You still have to find examples of sexism to justify your job. Imagine in your quarterly report, you tell your boss there is no more sexism. Well then, your boss might think, well why is your position need any more? But you like your job and the easy paycheck. So you are now incentivized to see sexism where none exists.