I had the same reactions as you, pretty much. While it's a non-issue with non-RPers, my knee-jerk reaction is that people who didn't follow naming conventions just didn't really care about the lore. And in turn, I think, "Why do these people even RP in the first place?"
But then I remembered that everyone has a story. And part of RPing is that you listen to other peoples' stories. Like the user above, her Miqo'te is named Claire. And they explained why she has such and such a name. And of course, that's perfectly acceptable. Another Miqo'te with such a naming convention would be Jace Hunter. And they have a story behind it.
As long as they have an IC reason for doing so, then it's all good.
But then I remembered that everyone has a story. And part of RPing is that you listen to other peoples' stories. Like the user above, her Miqo'te is named Claire. And they explained why she has such and such a name. And of course, that's perfectly acceptable. Another Miqo'te with such a naming convention would be Jace Hunter. And they have a story behind it.
As long as they have an IC reason for doing so, then it's all good.