It seems much harder to get an audience as someone complaining about technical details of codecs and their implementations, than as someone complaining about the formats (which in practical terms is always going to mean the ecosystem, or really, how broad the support base is or what the user has to do in order to deal with it).
Perhaps it's a matter of who hits the pain point? Ugly specs make annoyed devs, licensing problems make distributors unhappy, and ecosystem issues leave users unimpressed. (With some spillover between categories, of course.)