From a certain perspective I agree, but I see it more like this:
- theme parks should be safe;
- being safe requires diligent design, construction, operation, guest-supervision and maintenance;
- we rely on the diligence of those that design, construct, operate and maintain theme parks for our safety;
- as guests our personal responsibility is limited to obeying basic safety precautions when riding;
- there is inevitably some risk with going to theme parks as is the case with anything.
^^^I understand that the point you are making is the final bullet-point above. But there is scope for theme parks to be very dangerous if those persons responsible for safety, including guests, don’t pull their weight.
Nobody in this thread has said anything along these lines, but from time to time I do read comments online along the lines of “theme parks are absolutely safe”, “that accident happened ages ago, we need to move on” or even “yawn - don’t bring up the accident”. I find these comments misplaced - it’s glossing over and/or ignoring reality.