Near perfect is not perfect.
Evacuate more air and your light bulb needs hoovering up.
There is no such thing as a perfect vacuum. Not even in outer space.
And also as people here have already have tried to explain. Is there is plenty more situations right here on earth where we get pressures far greater than they have to deal with in the vacuum of space.
THink about it. If you have 15 PSI inside your space craft and 0 outside, that means there is only a difference of 15 psi.
But if you take a large truck tire that holds up to 100 psi and you have an atmospheric pressure pressure of 14.7 that gives you a pressure difference of 85.3 psi.
So there is much greater load on the wall of the truck tire than on the hull of your space craft.