The problem is, a bit of overspill can be a very large amount of noise.
And when the equipment is so available, you can easily end up with polluted parts of the spectrum.
When I see friends buying a baofeng, with no intention of taking even the first exam, putting it up to full power, and seeing if someone responds, it's a bit frustrating.
The hobby should have low barriers for entry, but not if that means constant interference for people doing things by the rules.