I will start this comment by saying that I do not agree with the FCC's initial decision to fine the guy $7000. However, the guy did at some point apply for, pay for, and sign for a license. He may have even applied for, paid for, and signed for a renewal of said license. The agreement and rules of that license would be apparent to anyone who reads them and tries to know something about what they are applying for, paying for, and signing for.
I also don't like the fact they have to come in that very second to see, even if there is no one present to let them in or to change things before they can see.
As far as little devices (i.e. wireless routers, wireless phones, etc) go, they have been classified and licensed with the FCC via the manufacturer to meet certain criteria for a personal device rating that basically means that it may or may not cause interference with other devices like it around your home, but they will not interfere with any major broadcast equipment. These devices are really not even close to the same ballpark as mediocre radio station equipment much less anything the FCC should concern themselves with inspections about.