It appears to me that you (or some of your clients) are just miffed because they no longer get something for nothing! This is not uncommon; many people are upset when something that they take for granted is taken away from them. In fact it seems to be part of human nature.We WANTED a weak filter that cost nothing and was easy to use.
Rather than dwell on something you think was rightfully yours and that you have unfairly lost, look at it the other way and celebrate the thousands of hours of free web filtering gifted to you by the good folks at Untangle. They gave you something of great value completely free of charge to you!
And that's what Web Monitor gives them exactly - no censorship but the tools supervise and data to support discussion!...they/we are opposed to the idea of automated censorship and prefer the supervision/discussion approach.
Celebrate what you've got (for nothing) rather than what you think has been unfairly taken away from you.