You wouldn't be able to do this twenty years ago. Thanks to social media, any picture taken by anyone, anywhere in the world, can be uploaded in a single second, and then shared thousands of times within the next hour. That's bad news for people who can't park their cars properly; concerned citizens with cameras are out there, and websites like ours will pick up on the pictures!
At least this driver had fair warning of what was going to happen. The printed note informs them that they suck at parking, and that the picture will be going online, so everyone else knows they suck at parking, too. The author stuck to their word, and this image is now doing the rounds on the internet. Plenty of people like the idea of being internet-famous, but probably not for inconsiderately parking their car on the sidewalk.