Rebuilding a home in a flood zone is a little different. That’s a permanent situation people decide not to change for infrequent floods. Some people might not have the means to uproot their lives to get out of a flood zone. This current situation is a temporary choice for fun. If you do something that involves being outside, understanding the weather is necessary.
By the same token, would you criticize the organizers for holding the festival in a place that can flood, even if in years past it didn’t?