Yeah it's super frustrating. Mine all had like paragraphs saying nice things too. My PI was very confused, he told me to email them to ask lol. I dunno. I'm a minority too: hispanic female immigrant haha (not that this should affect anything but you know how they encourage underrepresented people to apply or whatever).
But basically what it comes down to is that the ratings arent the only determinant. it goes to another person after that. and then they decide what is in the NSFs best interest to fund. So what other people said: making sure theyre funding a lot of different types of proposals, etc etc
Honorable mention is still great though so congrats