The most basic cause for bad technical decisions are wrong assumptions about technology.
If you believe every other web framework will get crushed with a few dozen simultaneous requests, you will be absolutely sure this is the solution you have been waiting for.
I am curious to try Erlang out, but I know exactly how many dozen requests my current tools can handle. And it's a lot more than a couple.
Usually it's not the web framework itself that is unable to process the requests, but the web application in which one http request ends up in a few database requests, and the database is the real bottleneck.
By writing something in Erlang does not make your program automagically perform well (and this applies to CouchDB too).
Short answer is no. Most of the "slow" queries that happen in databases are usually complicated select/join/update statements -- the same can happen for key/value databases. Even with TC, you're still programmatically writing the code to do the query and if you write slow code, your query will still be slow. The sweet sweet technology isn't going to magically solve anyone's problems.
Ignorance and/or disenguity(sp?) pisses me off. I'll read more but I'm getting the impression that people behind BOSS are one or more of inexperienced, clueless, full of them selves and thus not worth my time.
All other web frameworks will break down and cry if you ask them to process more than a few dozen simultaneous requests on a single machine.