I don't think that would be the case here...
"paint" is a pretty common industry term across a ton of manufacturers. So is "green" to some degree.
"full self driving capability" is not an industry standard term where there's 5 other car makers who all sell something called FSD that does X... and Tesla is deceptively selling under the same name and it does only Y.
This isn't elsewhere though. It's right there in the product description.
It TELLS YOU what full self driving entails in a specific bullet list of features.
That's not the fine print- that's the list of what the product actually is
The fine print is where they make it (even more clear) that it's an L2 system when you use those features.
If I buy something labeled "universal remote" but don't read the box to find out it only controls IR devices, not bluetooth ones, I can't sue them because IT SAID UNIVERSAL on it.
Given nobody has even gotten a lawyer willing to take such a case over 3 years after Tesla began selling FSD,... and even a full year after a serious walk-back of promised capabilities in early 2019... I think your reading of the situation might be incorrect.