It's a joke and people are signing it as a joke.WHAT THE FK.
If these people did a quick Google search, they would see Cave Story came out in 2004. Besides, the page says "Cave Story Corporation".
This is probably a joke.
If not, I'm not surprised. I bet the only reason this cause has followers is either:
-Obsessive Undertale fans.
-People just don't think of evidence to back their claims.
-People just don't think in general.
-Herd Mentality Theory
They are cuter.How so?