removing the antenna from a WIFI access point or a mobile phone

I am actually rather sure about this issue, but just to double-check, because I don't have a safe source for this:

If you remove the wifi antenna from a wifi AP or router (or the mobile phone antenna, in case it's a pluggable / turnable one), that's not good for your health, because the device improperly attempts to broadcast anyway.

Is that correct?

I saw friends' devices, whose antenna's had gotten removed, and I was rather astonished and frightened and recommended to place the antenna again, resp. to switch wifi (power) off on the device entirely.

Will somebody pls shed some light on this?