As Hank deals with the new overprotective leader of the Straight Arrows, he falls into two traps. One is laid by him and his own inner Peggy, with the need to be right ahead even of other people's rights. The other is set by the writers, with a logic trap that's hard to let go. Still, watching the safety-cornered leader do his mild thing was classic KOTH.
The trap Hank sets for himself is not respecting another parent's wishes, something that is both like and unlike him. Yes, the guy is irritating beyond measure, but his sons are his sons, and I'm pretty sure Hank would and has felt very negatively about anyone overriding him on Bobby.
The trap the writers set is a logic one--or an illogical one, as the case may be. Okay, Hank is defying the other man's wishes, and again they are his sons, to be raised (Laws and decency allowing) as he sees fit. But the real health problems he cites at the end to justify why he does this are ones he cites at the end. At no time does he take Hank aside and say 'They have this condition/allergy' or give him any clue beyond 'Don't'. That's one thing. The other is, while the man has a point in being upset for Hank overriding him and imposing his beliefs on the guy's sons, the troop leader was more than happy to force his 'super-safe' agenda down the throats of everyone else. So Hank is wrong? Cool. How they arrived at it is majorly uncool and robs a point from the hilarity of clashing parenting methods.