Does providing family information by what you have on your vehicle have any downside?

Not that people should be paranoid, but in these days of scams, identity theft, and the likes, could people be unwittingly providing too much info about themselves by what they display on their vehicle? I ride around and often see a vehicle in front of a house, on the back window there are stickers with dad, mom, three children, and a dog. The girl is the middle child. Sometimes even the names of the kids are there along with the family name. If there is a baby or booster seat you can deduct the younger boy is plausibly 5yr old or less. The sticker that says ”My daughter is an honor student at whatever school” lets one know the girl is still primary school age and what school she attends, all by clues displayed curbside on the vehicle. Could there be a downside to that, even if not from nefarious people, but marketers who know what demographic the family is?