Probably, but only by the un-educated or extreme carbon and titanium fanatics.
Bikes are like cars. Some are enviable right off of the showroom floor. Others are good for anchoring a ship. Most are in between. You get the picture?

My criteria:
"Used" is a bike that has been ridden for some time. Technically, that could mean one trip around the block. Practically, that's ridiculous. To me, "used" means it has been used, and shows that use with nicks, scracthes, and needing some maintenance. Not abused, just used. A college kid who "uses" a bike for a year, and decides they'd rather drive the remainder of their education.

"Classic" is a state of mind. Everyone's mind is a little different, so the term "classic" is a bit flexible. To me, a "classic" is a bike that has something that makes it stand out. Could be a technical innovation, styling, brand recognition, or a qaulity that connects with the rider. No two riders are exactly the same, hence, I might consider a bike classic and everybody else thinks it's a piece of junk. To me, Lamberts of England and electrowelded Schwinns are "classic".

"Vintage" has to do with age. The age could be as short as the manufacturer deciding to no longer make it, or as long as it takes to become rare enough to be valuable. Typically, I'd say 20 years. That's about how long it takes Top 40 music to start being played on the "old" stations and being used in commercials. I knew I was getting up there when "Fly like an Eagle" was used by FedEx!

Depending on where you live, your town may have a bike auction or community bike salvage program. Decent bikes can be had for very reasonable cost at those types of places. Plus, if you need parts, repairs, or advice, you'll have a contact point to return to.

Welcome to the forum!