I know that when I went to Disney Paris earlier this year, I prepared as if no one there was going to speak English (even though I knew there would be some) I made sure to get brochures in English and look up other information in English.
What I found interesting was a definite culture there that if you did something stupid- like ride a ride you shouldn't because you couldn't be bothered to figure out the warnings- then it was your own dumb fault and to bad. Watched a kid climb a part of a play ground they shouldn't, get one warning, then when they fell it was a, *shrug* "oh well, you were warned." They weren't hurt really, but certainly not the worries about lawsuits for guest misdeeds that there is here.
While I know (sadly from lots of experience) that many guests can't be bothered to educate themselves on even simple things, and language can create some barriers, it's also impossible for the parks to cover every single instance like this. And if someone is going to be riding rides in languages that aren't native to the culture, it should be upon the guest/ rider to educated and figure out if they can ride. But our legal system doesn't always see it that way.
BTW, in this specific case the ride isn't remotely at fault. They guy had a heart condition and the ride had nothing to do with it except be in the local where he apparently had issues. It's a money grab by the family.