There’s nothing to disagree with. It’s been explained that “Black Lives Matter” doesn’t mean “Only Black Lives Matter” ad nauseum. If you still choose to say “All Lives Matter” then you’re being purposefully stupid. And that’s well explained by the fact that there are 150 million people with below average intelligence in the US. Of those 150M, there tens of millions that are one standard deviation lower than average. This explains the overreaction to the name.