From the article
Piccolo is seeking damages in excess of $50,000 pursuant to Florida’s Wrongful Death Act, as well as damages for mental pain and suffering, loss of companionship and protection, loss of income and medical and funeral expenses.
And he isn't seeking $50,000. He's seeking in excess of $50,000; it says it right in the article. He's probably suing for tens of millions and I can't see how Disney is at fault here.
I believe he said somewhere earlier in this thread that they have a plan for the expansion bbt. If they would've put cars and villains there it would've blocked any more expansion in the area.