It is true that most of the best supported languages have been around for a good ten years. But each of those languages had a time when they were only a year old.
I don't deny languages take time to mature. I feel like Haxe is about two-thirds of the way towards being properly Mature. It is approaching 10 years old, yet I feel like it is only just getting started, A lot of people still haven't even heard of it.
Haxe is great but confusing for newbies. You can write anything to run on anything but with what libraries; tons of halfbaked thing around. The tutorials are per target which make it seem you can use the same language but have to write different code per platform. I like Haxe and tried it a number of times, but unless coming from Flash/AS it feels underdocumented and, in a lot places in the main site, quite dead. It's not but broken links, vital libraries which are unsupported etc.
I don't deny languages take time to mature. I feel like Haxe is about two-thirds of the way towards being properly Mature. It is approaching 10 years old, yet I feel like it is only just getting started, A lot of people still haven't even heard of it.