Yes, but the point is, some use them, most don't. The existence of the words means that someone using the language cared enough about the difference to distingu

Yes, but the point is, some use them, most don't. The existence of the words means that someone using the language cared enough about the difference to distinguish - but nothing about how few or many they were. Arguably the existence of niche words could even mean less, as in the flock words example, words that have more or less been invented as pure word games.