My son (service supervisor in a large Coles) has been yelled at, screamed at and threatened for enforcing the limits. Was bad at 4 packs worse at 1 pack.
He actually had a customer intervene and called the abuser out on her behaviour. His observation is that has been mostly Caucasian women over about 60 who have been both hoarding and rude.
Interestingly, when it first started, the people buying g hand sanitiser to send back to China were returning it once they found out that their relatives back home didn’t want or need it. I suspect they will be too embarrassed to try and return all the loo rolls and will have to find other things to do with it. Given there actually is no shortage in Australia anyway, I doubt anyone will be making massive profits from reselling.