Huge Suspension Damage from High Tire Pressure?

It had nothing to do with following too close. It had to do with the guardrail on my right, an 18 wheeler to my left and the tailgater behind me.

 

If you go by the door sticker and never rotate your tires then you'll get excessive edge wear on the front tires with almost full center tread and even wear on the rear tires those factory tire pressures are definitely not made for even tire wear,.
You can also see that the front tires are squished a lot more compared to the rears if you only have 2 psi more in the front than rear.
Perhaps factory psi are that low in the front for passenger comfort or protecting suspension components, because it's definitely not for even tire wear.

 

Maybe the high tire pressure caused the sway bar link to snap in half from hitting a big pothole.
Either that, or the mechanic forgot that the suspension has to be under load before fully tightening the sway bar link.
If you tighten the sway bar links while the car's on the lift, then they will be loose once you put the car back on the ground.

 

There are millions(probably even trillions) of unavoidable potholes here are in Pennsylvania especially with low beam headlight technology from the last century like my 2004 Impala has(that generation started to be manufactured in 1999). You have to choose the lesser of 2 evils between avoiding a pothole and then hitting another vehicle or hitting a pothole and avoiding getting in an accident with the tailgater behind you, oncoming traffic, or the car in the lane traveling the same direction as you.

 

The sway bar connects the left and right control arms and wheel hubs together NOT front to back.
The front left and right tires had the exact same tire pressure so what you said makes no sense.
Also, if anything, increased tire pressure in the front would increase the weight distribution toward the rear of the the car not the front.

 

Did you read the posts? These were about the sway bar links picture in the photos in the first post. It's for a 2004 Impala and a different design than a gen 3 Prius. It absolutely does need the suspension to be loaded when tightening the sway bar links.

 

WRONG, you will never be able to fully tighten the sway bar link on an Impala if vehicle's weight is not being supported by the suspension. Here's a video proving this. This is a Chevy Monte Carlo which is basically an Impala Coupe.
It has many interchangeable parts including the entire driver train and most if not all suspension components.
This guy has a hydraulic lift, why does even need a jack stand if the suspension did not need to be loaded?
Go to about 2:36 in this video.