There's (nearly) no such thing as "too much talking".
Projects needs contributors to be successful, and contributors learn about projects by hearing somebody talk about them, more often than not.
To stay on the topic of Perl 6, have you heard about the compilers called elf and mildew? Most people haven't heard about them. That's because the developers preferred to code, and didn't talk much about them outside of #perl6.
Let me tell you what happend to elf: its development stalled, because the main author was frustrated about not receiving any contributions.
Mildew is still being developed, but even I (who spends typically more than 3 hours a day reading #perl6, the mailing lists and blogs) don't really know what the current state is, what features are implemented, and if it's usable for any practical purpose.
So we need people who talk. We even need them if they don't contribute a single line of code (and chromatic has made significant code contributions, without which Rakudo wouldn't be anywhere near its current state).
We need people who talk, blog, write books, speak at conferences, talk to perl monger groups, talk to non-perl developers... we need all publicity we can get.