It’s not that you can’t complain, but moreso that people are tired of reading about people getting ripped of over and over again.
It’s getting old when the solution is so glaringly obvious.
Alternatively focus your grievances towards the company. That has a better chance of making an impact in reducing the tainted waters.
So in short: you have a right to complain, but we have a right to tell you that you are a part of the problem if you pre-order or support companies continually doing this crap.