I think you hit the nail on the head there. "Context-free" is more of a requirement than LALR or LL. The author clearly isn't a parser writer. I am, but I've yet to try a PEG grammar because ANTLR does such a great job.

But this doesn't change his point (or mine): languages should be created that are easy to write parsers for, so that its easier to write good tools.

And I think this applies to the grammar too: ANTLR's .g files are a good grammar language because its easy to write tools for - hence AntlrWorks.