Completely untrue. I have had air socks in my car for 20 years and the upper rear shock mounts area from left to right is absoultely fine. No renforcement items added, just bone stock.
While I mostly agree with this statement, there fine for laod leveling duties.
Replace your springs when you can.
On the issue of psi to run at, your fine now. There leveling the car with a mid level pressure. And that is OK. Jacking the car up for a stance would be a wrong move.
If you load the car up in the trunk, add a few pounds to level it. That's it.
