No that’s not true but typically don’t want to touch them with bare hands. Actually you should always wear gloves to keep oils and such out of your water and protect from bristleworms
That's a pretty Nem. Careful of that powerhead (at least that's what it looks like at the top of the frame) if it's close to the Nem. My Nems like to occasionally "go for walks" or just fly around the tank.
Very false and that is how I remove(d) them. Carpets are with caution as they are sticky to the touch but there no " electric field persay" to prevent hands