In general I would agree with you. But to make the system work, there have to be sanctions against frivolous cases. Advocates must be accountable to not burden the system unless there is some kind of probability of success. I don't know in this case whether such a standard has been met, but it's close.
In my field (tax law), I can be disbarred and fined for taking frivolous positions. I won't bore you with the "substantive authority" rule or the "one-in-three" standard, but I hope you understand that I can't represent anyone who wants to fall back on constitutional arguments or other positions listed in the "frivolous position" regs.
I am inclined to agree with you. There should be limits placed on the frivolity of the cases Judges can take.
The question now would be: How would you put these limits/sanctions into place without someone suing under the 5th and 14th Amendments? People are walking on a sheet of thin ice if they believe they can lay down sanctions prohibiting certain types of lawsuits. Those two amendments lit up in my mind the moment I heard the words "we need sanctions against frivolous cases." I can think of many ways to sue the the the government for enacting these types of sanctions. And by their enactment I believe they would create an even further and unnecessary burden on the system due to the lawsuits generated by such events.
By the way, I can always research those regulations, heck I'll even keep copies of them on my hard drive. I like to study laws and regulations, so boring me in that subject area would be near impossible to do.