You're right - evolution IS weak in evidence.
Except it isn’t. There are several billion years worth of evidence that has been studied extensively for the last 150 years. The Theory of Evolution is as robust as a theory can be. Those who chose to ignore that fact and engage in mindless and willful ignorance while purporting to support the insidious half-baked nonsense that masquerades as science under the pseudonym intelligent design, are simply incapable of the type of critical thought needed to understand the nature of evidence and the scientific method.