How does this happen?

I was at my daughter’s soccer game yesterday and I saw a guy near me had this kind of pop up seat. I thought to myself that’s handy I’ll have to look in to that because I hate carting around a heavy portable chair that I don’t always use because I’m talking to other parents. I said nothing out loud to anyone, yet now my pages are now filled with ads for that exact pop up chair. How? 🫠