I'd say it is under more. If you don't think so, you don't read much science. What you won't find, however, is constant scrutiny of the shape of the earth. Some things are established.
The problem with "challenges" to evolution is that they are at the level of challenging the shape of the earth. The real work in evolution has moved on.
You think the Theory of Evolution is under more scrutiny than any other theory? That may be so. I would not be surprised. The news seems to bear that out, too.
I'm nervous about any "science" that has as it's premise or goal to shoot down the Theory of Evolution. If the Theory of Evolution is ever discredited it should be by way of the standrd methods of observation, testing, etc.
Otherwise I'm sure you know very well that I find the Theory of Evolution, insofar as it supposes any proofs beyond its capacity for observation, to be a preposterous faith.
I don't think it is kind or fair to reduce the work of those who have proposed thoughtful critiques to the level of "challenging the shape of the earth." I have yet to see you post any detailed rebuttal of their claims. And I certainly have yet to see a satisfactory explanation of how so much intelligence and design could spring up in the universe without an intelligent designer.