Not just furs but in genersl yes. Think its cause it fits a certain feeling to say. Was a study done to see how shapes and stuff link to what people associate names with like Kiki being majorly thought of as a good name for a spiky like shape compared to a round one. Lewd probably just is like that name with a shape deal. Fitting some feel or image for a lot of people now.

Ken Ashcorp very recently released a song about being Lewd and proud, may have something to do with it

I've noticed, especially since the journal right next to yours in my thing has Lewd in the title as well.

I know I have used it for a long time now to state that the topic being talked about wasnt suitable for those underaged in chatrooms.

But no, you are not crazy. A majorty of people are now learning older words and using them.