Totally agree Jeff. The success or failure of my startup is not going to hang on whether whitespace is significant or how many semi-colons I use.
I think you could actually go broader than community and say it's the entire language ecosystem that matters, and a comparison at that level I do think surfaces differences that have significant mission enabling/threatening consequences for technology-based startups. (by "ecosystem" I mean everything from skills availability to breadth and maturity of hosting options, vibrancy of a supporting component marketplace [paid or open source], maturity of development practices in the community [testing, agile etc] and so on)
Knowing the presenters, I'm pretty sure this is where the discussions will head.
In fact, I suspect there may be a subtext at work:
When founders ask:
"Which language is right for your startup? PHP, Python or Ruby?"
(as non- or semi-technical founders are wont to do),
They will discover (hopefully sooner than later) that the answer is:
"I'm sorry, Dave. That's not a question with a generally applicable and useful answer."
"Architectural Analysis" is one of the formal methods that the technical side of the house can go through to fill in details/make choices (like - eventually - which language), but there are many other questions that come before that can totally flip the language question e.g. does our startup idea best fit a "mobile first" strategy? Are we SaaS or do we ship bits?
Cheers,
Paul