Don't you "Aw Gee" me, Burk.
We both know you tried to beat that guy up last night.
'Magic madness', eh? Guess that explains why Moe went from meek to murderous.
You trust Burk even after he admitted to wanting to fight the Baron? Guess Pablo must have smoothed things out. Verbal wizardry and all that.
Also starting to feel bad for Moe, somebody ruined his life to make him their weapon.
I notice that he said all the people he trusts are in the room. Not that all the people in the room are people he trusts.
I love Burk's blush.
The use of amulets and other items to transfer ability to channel magic is very similar in principle to creating artificial magic users. It's even better, because the donor of magic powers (mage king or whatever it is) has greater control over the acceptors (like the judge and the blonde here).
I suppose the most important reason they censor this information is the admission, that it can be done without the mage king's help and outside of the current regime control.
Also, I don't think the judge really "trusts" Burk. He probably thinks of him as some kind of simpleton, thus not dangerous (politically).
Even though Burk did try to fight him, he was super sincere and trustworthy about it.
let me guess, aristocrat is behind them?
He trusts Burk because Burk doesn't care, and might already know (as well as the fact that he gave up on a significant favour or gift in order to receive this). He trusts the girl because this is something that she'll definitely learn about in the future, and might benefit from learning now. He trusts Pablo because he's proven himself and is known to be a diplomat of a country known for it's difficulty in imitating their diplomats. In other words, Pablo's only real threat in knowing this knowledge is sharing it with his home country, which might already know.
In short, I am not at all surprised at him "trusting" these three with this. However, this "Madness Magic" might actually be a significant historical reason why Justopea is so terrified of Mages. After all, if they were running from a place devastated by newly-made mages who obviously went insane, and the fact that these mages were actively GIVEN their ability to do magic, then it makes a lot of sense to have them make the mere act of using magic illegal in response.
The fact that he let Burk into the vault to tell him these things and their dialog indicates he trusts him more than the guards.
Burk spends most of his time looking like a simple-minded pain in the neck, but when he breaks kayfabe and goes serious (as he did in front of the judge several times, last time on the previous page) you can get a better idea of his moral standing.
The judge is visibly a smart man, Burk, despite his usual "Burkyness" has already displayed, for the judge to witness, visible signs of wisdom and knowing whats going on.
Those guys in the background of panel 4, in darkness, with red eyes, are clearly vampires.