You can't "lock" something that doesn't exist.

[Alucard135]

If people used it back during 1.0 without anyone taking issue with it, I don't see why it is a problem all of a sudden..

That's where the problem is. The number of players back in 1.0 was not as massive or even close to what we have today. You have a lot of players coming from different MMOs at different times and the majority came after 2.0 (and some had no idea that Miqo'te and Roes were only one gender). So naturally, the majority will not be familiar with the 1.0 usage of the term and would be using it the way they knew it in other MMOs. So in this case, the majority can actually change the meaning of a term used back in 1.0 to something else, since now the new meaning became the commonly known meaning.