Take it from someone who has done even just a small amount of automotive paint work, it's a time consuming process and thus one that can be pricey to do right. As such, you want to avoid problems with it, from paint that easily chips to clearcoats that start peeling, because it's a pain to fix.
Most of those models are 7 to 10 years old at this point, and while they shouldn't necessarily be showing problems, they are getting on the old side. It is a little concerning that the Toyota Tundra and Tesla Model X are just 2 years old and showing up so high on this list. This seems to support what Consumer Reports notes about high levels of paint issues often being specific to a model year, particularly the first year of a new generation.
It's also interesting that three Hyundais and three Fords appear on this list. But as this list is specific down to the model year, you can't draw any broad conclusions. Even companies known for extremely high quality and reliability can have a year where something went a bit wrong. To have any broader sense of brand weaknesses would require more information on more models and years.