Earlier quoted context omitted.
You're describing a sub-group of young Valley-centric developers (and the occasional outspoken charismatic CEO), drawn to Rails because of its prominence in the start-up environment. It's simple numbers: since Rails is arguably the most popular for ambitious SV companies, then sure, it's going to reflect that culture to some extent. But the community runs deeper than that, and the "Matz Is Nice So We Are Nice" world…
I strongly disagree with your statement that Ruby excels and metaprogramming and DSLs. Other languages (Scala, C#, F#, etc) with coherent type systems have demonstrated an ability to define equivalently useful DSLs with the added property of validating correctness of a declarative language at compile time. You mention LINQ as somehow deriving from Ruby -- it doesn't, it derives from set theory, relational algebra, an…
I'm afraid this might come down to a philosophical difference for you.