There's certainly nothing wrong with being skeptical and uncertain about things you don't have a good understanding of.
Here's a quick anecdote:
Most of my ham friends, of whom I have hundreds, are regular users of handheld VHF/UHF radios (known as "HTs").
The American standard allows a maximum power output for a GSM cellphone of 2 watts peak power. In fact, the battery would last no time at all if that were typical, and common cellphone power output is more usually only about 1/10 of a watt when talking (the cellphone tower tells your phone how much power it needs to use for reliable communication).
But our amateur HTs can usually put out an honest five watts (they have much larger batteries and more powerful RF transistors). Hams (like me) have been holding these things up to their heads and talking on them for hours at a time, often on a daily basis, for decades, with no ill effects (other than the tendency to sound like a technical geek to normal people).