I disagree with them about it being terrible too; but I think it's an issue of ignorance, not skill. I didn't know what it was either, but thankfully the kind people up at the top comments answered an asker! ^^
The top picture is a car wheel with far too many wheel weights. The bottom is a large amount of wheel weights. They're used to balance wheels which helps make the ride smooth.
Easier to wait for a couple helpful comments. On my phone with the poor resolution of the image, I didn't realize the top pic was those same weights on the tire, and didn't understand that until another user pointed it out. Just thought the pic was of a tire without weights.