Safe and efficient flight routes, like useful frequency spectra, are a high demand limited space quantity that can't be used by two people at the same time. To my mind, flying near an airport is actually the more troublesome crime, because people will assume it doesn't matter, but it definitely does.

An international flight system is only possible because a highly regulated system exists to ensure that a French plane flying east over Ukrainian airspace won't collide with a Norwegian plane going south, which is why all major flight plans are filed in advance.

If some scrub with $500 and no brain forces a plane to deviate from it's flight path to avoid sucking his $350 drone into its $12,000,000 engine, it could cause a chain-reaction of re-routing that costs tens of thousands of dollars in fuel and delay associated costs.

Don't fuck with airports. If you've got to scratch that public nuisance itch, go fishing with dynamite or something.