Unsolicited advertising is what everyone hates.
If I go onto my grocery store website and see "we have a sale on xyz" I'm not bothered because I went to that website to see what they have. I'm also not bothered by sales displays in the store. All forms of acceptable advertising.
But what I absolutely hate is navigating a webpage unrelated to my store and seeing "Did you know you can buy widgets at your local store!" or watching youtube and seeing an unskippable 30 second ad for my store. Or getting a newspaper that is actually just 90% advertisement with 2 paragraphs of actual news.
I wonder whether you would consider ads for fashion houses in a fashion magazine to be "solicited" or "unsolicited"?
The only thing I would consider solicited is when I decide that I want to see product information. Everything else is just some chapter from the narcissists prayer: "and if I did, it wasn't that bad"