BTW, the one they got into was one of those small bolt in deals with a key pad.
Most criminals don’t come prepared to defeat much.
Household safe manufacturers usually limit their offerings to 1/4” steel because it will deter all but those that REALLY come prepared.
After that, 1/4” steel will be no deterrant.
My single-gun safe is only there to give me quick access to a secured handgun. I don’t count on it to really deter somebody who wants in.