One is from a decaying material

Specifically radioactive decay.

the other is from controlled electron beam

So, not radioactivity.

Radiation is a really vague term. It's just energy moving in the form of waves or particles. Sunlight is radiation. Radio waves are radiation. Microwaves are radiation. Wifi is radiation.

Radiation can be dangerous in a few ways. Something can be very bright and blind you, or it can cause you to heat up too much. X-rays are an example of ionizing radiation, that's dangerous because it can break apart molecular bonds, causing damage to cells. That's why you can get skin cancer from ultraviolet radiation. X-rays are a shorter wavelength than ultraviolet light, so there's more potential cellular damage per photon.

But, radioactivity is dangerous not just because of X-rays, but primarily because of alpha and beta particles, and because of even higher energy particles like gamma particles / rays.

So, just because there's one type of ionizing radiation that can come from a CRT-TV that is also peripherally associated with radioactive decay doesn't mean that there's any connection between a TV and radioactivity.

That would be like saying that an atomic bomb causes a huge explosion, and a fertilizer bomb also causes a huge explosion, so a fertilizer bomb is a nuke.