In the general population, I think most don't intend to impress anyone, but some do.
However, what's impressive in one circle is not necessarily impressive in another. Folks that own mega yachts know that. It's their fellow mega yacht owners that will be most likely to judge whether they look like the can afford it. We are not on their radar.
There was a song written about that:
Shania Twain - That Don't Impress Me Much - YouTube