I don't think that's true at all. Where else would you learn about new services or products?
Here are some examples from a 2010 model railroader. https://photos.app.goo.gl/RvRzECgs7MaTo7tP8
Some, especially the Kato model Amtrak one, have some aspects of an aspirational ad, but I don't know if I'd condem them as such. They usually, as the Kato one has, information about the specific items that are now available and often some "ambiance" information that many hobbiests, especially people new to the hobby like to look at.
I don't mind ads like these as they're not designed to make you feel as though you need to purchase something to be better and they're not in a public space. They're they're to matter-of-factly says a service or product is available.
I could also show you the local pennysaver or Craigslist. All of those are also add, but they're not the "aspirational" kind. They're more matter-of-factly that someone is selling so (used) item, or provides some kind of service, or that there is a garage or estate sale at such-and-such address. How else would this information be made redily and easily available?