Are ham radios dangerous?
There is a measure of danger in ham radios, yes.
However, these hazards are typically related to base station installation (which requires massive power supplies) and the output of enormous repeater antennas.
Handheld radio waves are not ionizing and do not present a danger to human health.
The most dangerous action you can take with a handheld ham radio is to illegally use a military frequency, bludgeon someone with the transceiver, or toss the lithium-ion battery into a fire.
Don’t do any of those things!