I mean, yes? OTP is a framework—a paradigm for writing your code in, essentially—but it's an optional one. That's why it's split out from Erlang itself. You can write Erlang however you like. Most people choose to write it in the OTP paradigm. But sometimes that's not the best choice (e.g. the type of code that leex/yecc generates, does not obey OTP principles, nor would it help it in any way if it did.)

I think it's more accurate to say that OTP's dogma comes specifically from it having chased down pragmatism to a fault, to the point where whether or not OTP's doing something is a reasonably-reliable indicator of whether or not that something is a good idea (at least for Erlang's typical use cases) and therefore arguably warrants the dogmatism.