I always find it funny to hear middle- and upper- class whites talk about cultural appropriation since most of the time theirs is not the culture being appropriated. I know it’s just me, but there are just some things that shouldn’t be touched by non-group members. For example, if you are not Jewish, I believe you should not have a Seder. That is a very specific religious ritual that comes from a particular history and means particular things to that group. If you are not a member of that group, you are just play acting in my opinion. And play acting is not religious. It’s offensive.
So I’m all for the language about cultural appropriation. While there might be some clarification needed, the sentiment itself is one that is surely needed in UU circles.