It makes sense that you find the system you grew up with to be more intuitive, but I grew up with fahrenheit, and I think you’ve misunderstood the assertion a little bit.
The older observation that this meme is riffing off of is that 100°C is the point at which water stops being sloshy and starts being steamy, whereas 100°F is the (much fuzzier) point at which humans stop moving around and start decomposing.
The Kelvin addition muddies things because 100K isn’t really significant.
I mean, it is entirely reasonable that “bad” is the best performance you can hope for while sorting an entire set of generally comparable items.
If you can abuse special knowledge about the data being sorted then you can get better performance with things like radix sort, but in general it just takes a lot of work to compare them all even if you are clever to avoid wasted effort.