Again, not even close.
Let's look at what may be an average fishing without a license case:
The officer writes the citation. He then must complete an arrest warrant and file it at the county courthouse. Probably a minimum of an hour to do that.
Then, because even if the violator pays the ticket, they have the option of going to court. If the officer isn't there to prosecute the case, it likely is thrown out. The officer will try to have multiple cases set on the same day. Regardless, probably another 3-4 hours of time tied up (minimum).
If the person pays the citation, or if found guilty in court, I suspect the total cost to the defendant now likely is $350-400. That sounds like a big payday for TWRA. Again, wrong.
Out of that $350, the actual fine on the charge will most likely be $10. Out of that, TWRA gets $4. The rest goes (by law) to the county school fund. The remaining $340 are court costs, with a significant portion going to the judges retirement fund. Out of the court costs, TWRA usually receives a $25 arrest fee.
So, TWRA nets $29 for maybe 4-5 hrs of the officer's time. It doesn't come close to even paying for the time to write and prosecute the violation.
So, just an ignorant take to even think that TWRA would set regulations trying to trick people into violating them.