Because it's more extreme.

Do you think a soft vacuum of 0.002 atmospheres of pressure would be notably easier to prevent leaks into?

> A few years ago a Soyuz was improperly drilled during manufacture. This was patched with a super epoxy... and then began leaking air on orbit. Paint won't seal what a super aerospace epoxy failed to seal.

Wasn't the fix on the ground a secret patch by the person that drilled the hole? I don't trust that to have been done properly.

And then when they noticed it was leaking... they used the super aerospace epoxy. Which was labeled as temporary but as far as I know it's still the fix.

Also that was a serious hole, 2mm wide, not a microhole like you'd try to fix with paint.