Honestly, what you just posted sounds more like an argument for a new updated fleet. Nobody is saying to throw immense money at the problem just willy nilly. The trains are many years past their expected lifespan, so it's not unreasonable to be wondering why the big delay. I mean, if they are so old that parts are hard to come by, that should say something right there.
Aren't the parks closing earlier than they have in a long time? Aren't PM EMH hours 2 hours now instead of 3? That should have already given them a little more time for maintenance.
If issues are happening at all, eventually don't you think they'll happen when people are on board?
Of course Disney wouldn't purposely operate an unsafe transportation system. But there are degrees of being "safe". And I do worry that Disney's desire to keep margins at such a high level might cloud the judgment of some managers when it comes to budgeting for maintenance.
Is this the first door incident? Or just the first one to be caught on video?
We just replaced our primary family vehicle. It was 12 years old. Parts are readily available. But there just reaches a point of diminishing returns. Where it's smarter to take the hit and spend the money than to keep throwing money at it fixing things and suffering through the inconvenience of service issues. And foolish to take chances with safety.
Unfortunately it's Disney's job to be one step ahead of their guests. They know not everyone is old enough to understand the dangers. Or careful enough. Or whatever enough. You can't rely on people to follow the rules. You have to be 100% certain your train will not be in motion with a door open.
I mean, come on. This is the company that put lap bars on Splash Mountain. They KNOW people do stupid things.