Strong though Eddie Hall is, at nearly 200kg his 500kg deadlift world record isn’t that impressive as a body weighy ratio. It’s only 2.7x ish whereas plenty of athletes manage 3x plus. There’s a tiny woman with a 4x BW back squat which is more impressive (I think anyway).
A small woman squatting 4 times her own bodyweight is hugely impressive but she’s made of the same stuff as Hall – flesh and blood. I’m guessing here but I imagine there must be a point, weight wise, beyond which the human body can’t function. No doubt Hall’s tendons and joints are much stronger than the average man, but he’s still human.