For the most part it is true. You may bring 'em in but there are plenty of pesticides that you can use to kill them out. So if you bring one in be prepepared to buy some spray.
I'VE BROUGHT 2 IN SO FAR FROM OUTSIDE, AND YES 1 OF THEM IS PLAGUED WITH BUGS. BUT I REFUSED TO GIVE UP ON THEM. RIGHT NOW I'M FIGHTING THEM OFF WITH " SAFER INSECTICIDAL SOAP". SO FAR SO GOOD. BUT THE BIGGEST NO NO WOULD BE TO PUT IT IN YOUR GROW BOX AMOUNGST ANY OF YOUR INDOOR PLANTS.