In case you missed it, this paper as I understand it is not about proposing a new "one true bnf" to become the new standard, it's about making meta-specificatio

In case you missed it, this paper as I understand it is not about proposing a new "one true bnf" to become the new standard, it's about making meta-specifications for easily writing down a formal spec of how the language grammar is written, which can then be used by tools to translate and compare between the different standards. From the abstract: "instead of adding another syntactic notation and arguing about its excellence, we propose to retain the diversity and to cope with it by formally defining syntactic notations and using such definitions to import existing grammars to grammar engineering frameworks and to export (pretty-print) existing grammars to any desired syntactic notation."