"confused about what you're objecting to" Clicking a link, the first thing I read is the whole article is sponsored. What is a standard sponsored article? Was

"confused about what you're objecting to" Clicking a link, the first thing I read is the whole article is sponsored. What is a standard sponsored article? Was the article written and the advert tacked onto the start? Did the advertiser commission the article? Did a PR agency plant it on their behalf? I dislike advertising, a personal preference. My question was, "how long has medium had sponsored posts?"