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

[ArcaneCarbuncle]

Just wait and see, let them smooth things over first, so the male and female of the new races can be added with minimal to no issue. Plus you know it's not FREE for them to put the character models together.

Thing is, SE has asked the playerbase to make their voices heard and provide feedback so they can take it into consideration, not to "just wait and see".
I get it, some people are very loud and obnoxious (and that applies to both sides really), but ultimately all people are doing is what SE told them to do. And for what we know, if we don't speak up now, they are never going to add either missing gender option.
So let people speak up, they have a right to do at least that.