I would mostly worry if the tank was long...like a 6ft.
If it's a 4ft I would not worry. I had a 6ft long that was off by a quarter inch on one side......and the water lvl was lower by half inch difference. That's when I would worry. On a long tank.
Your thread title says paranoia or bad design...I think your more of a worry wart.
I see no problems here. Have you seen the stands for sale at Petco? And those go in doctors offices... they don't worry.
I have some calming tea you can have.
Obviously I'm giving you a hard time. But your stand looks well built more Overkill. And the lvl issue is minimal for your tank assuming its not 6ft long