You don't even have to go that far. It's obvious that the intention of the company's creator are carried through the company actions, be it nationalism, environmentalism, religious views, &c.
All sources are biased but some are more biased than others. Nationalists are the last people I'd trust to give an accurate depiction of their country's history.
You don't meet this guy when you visit the park. The park is an artistic endeavour to let kids and families learn about some french history in a fun way; the same history that you find in school textbooks. No politics involved.
Nationalism is in some cases legal, but it’s not respectable and we need not dignify it as such.