The only explanation of its intent in the readme is that it was created "in order to offer an easy way to write portable code for the iOS and Android platforms." I think the parent comment was pointing out, in a sideways manner, that they didn't need to create a new language to do that, so it's somewhat mysterious what this is actually meant for.

The parent comment said 'strange...' as if they had claimed that nobody had done it before, and therefore it was strange how he was doing it. But they hadn't claimed that. So what is strange? If a new bakery opens in my town I don't say 'strange... I've been buying bread for years'. It's an alternative offering. You may say it's not necessary, but it's not strange. That just doesn't make any sense as a snarky remark in this situation.

If somebody asked why Hypothetical Dave opened a bakery and Dave answered "So this town would have a source of bread," I think it would be reasonable to find that strange. He isn't explicitly saying nobody has done it before, but the answer is weird if it's already been done.

I mean, creating an unnecessary programming language isn't strange — it's extremely common, and some are even good. But providing a rationale for creating the language that doesn't explain why you created the language is a bit odd, isn't it?