Like driving a car, or sailing a boat between ports, or flying a plane. Permissionless radio will also result in fines. I personally am not troubled by it. It doesn’t violate my philosophical tenants. But There is still quite a bit you can learn by yourself without a license it just means you can’t legally transmit, listening doesn’t require a license. Transmission is the thing which could cause a harm. There is a part of the spectrum which you can transmit without a license (see link) if you stay within other requirements. But the licensing process is a key means of gaining the basic knowledge.

I believe this is still accurate https://www.arrl.org/lf-low-frequency