Security at airports now are hit and miss with Leathermans, many airlines clarified that they don't consider them tools of the trade anymore. (probably management don't want pilots with anymore sharp objects than they need when around them).
”Well, a butcher can’t just walk down the street after work with his knives, can he?”
Is there actually a law preventing that? I thought you were just not allowed the conceal knives or carry prohibited weapons, can't say I'd look twice if a butcher walked past carrying knives in a non aggressive manner. What about a Chef, or handyman with a truck full of saws and sharp things...
Some of this stuff just really smacks of very low intelligence interpreting bad laws.