You look at this chart and freak out over the metric Mass side.
When showing the superiority of the metric prefix system don't cap it off with a legacy unit name. Especially one as confounding and arbitrary as the Tonne.
There's like five versions of that damn unit.
You undercut the whole point of showing how sensible your unit system is when you use 1 tonne to a thousand kilograms instead of going, oh I don't know, 1 Megagram to the thousand kilograms.
Also it would be more balanced if you kept up with two lenght ratios and two mass ratios for the comparison of both systems. Heck, this isn't even getting into the problem of comparing a weight system with a mass system.
It's also moot because the US is a metric country. Most all consumer products are labeled in both unit systems. There's just no legal compulsion to adopt sole metric labeling. Also the units are fully convertible. That's sort of how they work.
And yes, there are people that want to make using US colloquial scales illegal. Even worse they want to make sure it's round metric numbers. Because if companies shrugged and started selling 3.78 liter milk jugs that would defeat their whole point.
Yes there are militant metricists.