He painted the road with new markings (stop) that didn't exist, and took down signs indicating there was a crosswalk and replaced them with stop signs. Obviously none of these should be some sort og huge crime but you could definitely be an ass about it and charge someone for all of these crimes for it. Doubt it'd hold up in court for any actual punishment.
Painting on the road = vandalism
Changing the signs for different ones = interfering with traffic control device
Taking down signs that are government property = grand theft
You can actually specify in your website what images should be used for embeds like this. They're called Open Graph Tags.
They've specified one that isn't in the article. (probably to make you scroll more for it and see more ads, or less maliciously this preview was generated when this image was in the article and it has since changed)
The image itself is a screenshot from the trailer.
Yikes, I hope you're one day able to find some joy in life and can look at something that is a joke you don't find funny/don't understand and just ignore it instead of whatever this is.
For new videos (ones they don't have old scraped data to rely on) they capture the like and dislikes from users who have the extension installed, and extrapolate the amount of dislikes from that ratio and the amount of likes YouTube shows.