You realise that (typically) an uncle would be one generation younger and thus have decades more exposure to technology, hence "so simple my uncle could use it"

You realise that (typically) an uncle would be one generation younger and thus have decades more exposure to technology, hence "so simple my uncle could use it" doesn't really work. It's hard to hide from the fact that seniors are more likely to struggle with technology. You can't sweep that under a politically correct rug. And if we did, people would be less likely to make things like this, because no-one could talk about them.