It's likely that you can injure yourself with those, yes, but the injuries that are most likely to occur are not high severity. The more significant injuries are less likely to happen, and there are things we do to make that the case. Kettles have a closed top, as do saucepans. There are procedures to use knives so that you don't hurt yourself, and if you're chopping something tricky, you typically pay heightened attention to it.

The risk assessment is all about likelihood and severity for scenarios, and the purpose of safeguards is to reduce that likelihood to meet an acceptable risk tolerance. With McDonald's here, they not only had a very high severity incident, but they also didn't really take steps to reduce the likelihood. They could have served it with a lid. They could have used a larger cup than necessary so the water level was low. They could have added the cream and sugar before giving it to the customer, so there was no need to do anything except hold it and drink it.

In other words, they were completely reckless. And if you behaved recklessly in your kitchen, it would also be a red flag in these safety analyses. Do you typically transfer boiling water when it's in a container full to the brim? Do you watch TV while chopping tricky food with blunt knives? Do you leave your floor wet if there's a spill? What about cranking your stove up to max your everything you do, or using your oven without oven mitts?

You're being very purposely obtuse by suggesting third degree burns are comparable to burns from briefly touching the stove. Feel free to continue doing so however, it only highlights the difference between serious safety analysis and being a contrarian jackass.