Noting that the evidence is insufficient basis for the claim is not unkind.

But saying “I don’t want to be wildly unkind” implies that there is something about the author and their claim that is deserving of meanness. I think that is an unkind thing to say.

That’s a fair point. I thought the context of “unkind” was already clear from the grandparent comment:

> This post makes very big claims based on a very basic application that doesn't seem to be much more than a few toggle buttons and a couple of animations thrown in, and some 'statistics' that don't appear to be based on any actual facts.