Either: "Someone got excited, took a closer look and wrote a blog post", or "someone got mildly annoyed by the overhyping, tried it out and wrote a blog post about it". It seems to be fairly factual criticism to me, comparing the marketing claims to actual experience.
And especially because getting a language going is such a big project I don't get why you'd state things that aren't there yet - everyone would expect an early version to not have all those things if there weren't claims to the opposite, so being honest about the state of things doesn't really hurt you. To the contrary, it avoids people being disappointed when they want to try something that's claimed as a feature and it isn't there. And some probably consider it unfair towards projects that are less bold in their claims.
I'm not sure what the "harmless" comments are about - the article doesn't mention anything about that (or the income) at all?