Chasing around domestic appliances checking for safety violations looks like blaming the victim. The problem was way upstream of that.

We had a supply breakdown in our village when a complicated valve broke - it had been made in Russia and Transco had no spares in the UK, so getting one flown over took time. But at least they didn't have the chutzpah to imply we were burning their gas wrong. (Watch for a lot more episodes like that post-Brexit when getting EU-made machinery spares gets a lot more complicated).