The reason they're doing this is because a lot of crimes have been committed -- resulting in interference with weather radar.
Freedom is better.
Oh, and you can get freedom -- it's just the radio software that's the issue. The obvious solution is to make the radio software un-flashable, and leave the router software flashable.
So under this rule they will simply make the entire appliance non-flashable as it will be the cheapest way to comply with the regulation.
The main reason is "because I want to".
Any answer to that also justifies my desire to be free to reprogram my radio.