@Marie6848 Not as far as I know. I wouldn't worry about it too much. Many guests wouldn't even notice the date your profile was created. And once you get a few bookings and reviews, it will cease to be a question.
I'm not sure why you consider this a negative inquiry. They just asked. I've asked guests that had long standing profiles yet no reviews the same question. It's just asking for clarification, nothing wrong with that.
You could put a line in your listing description which explains that you've travelled as a guest, but just opened a listing as a host.