As a k programmer myself I'd say to take that statement with a grain of salt and at least give the language a chance if you have some spare time. It's certainly true that the community is small and it's certainly true that there are plenty of really sharp programmers in the community but that doesn't mean that you need to be a genius to write k code.
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Well, the part where it says:
> Arthur Whitney's k and its derivatives have served a small number of highly skilled programmers
Doesn't exactly start off with an inclusive tone.
As a k programmer myself I'd say to take that statement with a grain of salt and at least give the language a chance if you have some spare time. It's certainly true that the community is small and it's certainly true that there are plenty of really sharp programmers in the community but that doesn't mean that you need to be a genius to write k code.
It answers this question: if the language is so great and has been around for so long, why haven't we heard about it?