And they lost because the airline used it in a stupid way that gave their customers false information in an official manner. The airline is the user in this context, this bill isn't about them.

This bill is akin to suing the company that supplied the bot (even if it was a free open source bot available to all) because the airline was dumb enough to use it in such a stupid manner, instead of the airline itself for its misuse.

AI is a tool, you don't go after the guy making hammers because someone used it on people instead of nails.