Why do people think bacteria some how proves evolution is true?
If you had studied you'd know it's not evolution at all: The bacteria that survive aren't strong, they are defective examples that can't metabolise food properly, or pump fluid fast through their skin. The healthy bacteria all get killed off by the chems, leaving the defective ones able to succeed in the now-empty environment.

When the penicillin is removed, the healthy bacteria repopulate and squeeze out the mutants. That's why hospitals have the problem: they use penicillin and bleach all the time. The 'superbugs' have a broken mechanism which enables them to survive, but they are not more complex or superior in any way. Studies of these bacteria and other organisms show this.