It is the scholars of hadith who have graded the levels of authenticity of hadith; just cos a hadith might not agree with our limited human intellects doesn’t mean we “reject” it and to ridicule a hadith is kufr surely because it is ridiculing a saying of Allah’s Messenger (sal Allahu alayhi wa sallam).
Yes, Islam covers all aspects of human life.
But I think Andhra is just trying to cause mischief and is not seiously interested in such things.