Your argument works even better the other way round. Most of these terms of venery are so obscure that the only time they get used is in trivia quizzes. If, a

Your argument works even better the other way round. Most of these terms of venery are so obscure that the only time they get used is in trivia quizzes. If, as you seem to say English is decided by usage, then the idea that there is a 'correct' term for a group of bobolinks beyond 'group' is just a fun fiction. As far as I'm concerned, you're free to describe a group of animals using whatever word conveys the experience best, and since, as you say English lacks a governing council, nobody should worry about using the 'correct' term of venery.