IMO it is a problem. The extra products are a nuisance and they often get in the way of finding the what I wanted.

It wasn't so bad when the only items sold by third parties were obscure and niche products that Amazon didn't carry. It was actually a good indicator that I might be better off going directly to a site dedicated to bike parts or camera equipment or outdoor equipment or whatever.

But now it seems like every time I search for anything I have to filter out a dozen third party or "sponsored" items that I'm not interested in. If I wanted to be uncertain of what I was getting, have a questionable return policy, and get crappy non-Prime shipping, I wouldn't have went to Amazon in the first place.