It is upsetting to me but you are right, they'd know Dyson. (I wish they would instead know the name Chris Duncan, the inventor of the Henry vacuum cleaner and while still a Brexiteer, a man who hasn't subsequently kicked dirt in the eye of the UK).

They wouldn't remember Tim Berners-Lee's actual name but they would be able to say, the web guy. (Which is probably better for him when he goes shopping).