Honestly, I respect Kwanza as any other celebration which honours an ethnicity and one's heritage.
So you celebrate copycat fraud holidays. You realize Kwanzaa was created by a jealous black person who took some stuff from hanukah and some stuff from Christmas. You realize they light a Kenorah....a KENORAH!!! I mean how original is that fraud of a holiday?!
I don't celebrate it. I am not African. If anything I'd celebrate European Holidays. But I respect those Africans who celebrate.
Regarding the "Kinara" (It's not Kenorah), it's a Swahili word which means candleholder, the similarity with the word Menorah is because Swahilli has some Arabic influence and Arabic is a Semitic language. But, in fact, the shape of their Kinara and the way they light it was obvioulsy inspired by the Jewish Hanukkah. I don't know if just getting inspiration from a Holy Jewish item they just may have seen at the same time of their secular feast is hallachically a sin for a Gentile or not. A Rav should decide.
And Kwanzaa does not pretend to be an original ethnic traditional celebration from Africa. It's meant to honour African heritage even if using a constructed celebration to be held collectively by African descendants who lost their individual tribal traditions. So it cannot be considered to be a fraud.
If I celebrated the Italian Republic Day with a meal but I ate typical Argentine food instead of traditional Italian meals, is it a fraud?
Apart from the possibility of an hallachically transgression with that Kinara, I don't see anything wrong with Kwanzaa.