Absolutely. It is also your duty to demonstrates where the evidence works just as well under a disfavored hypothesis. We are supposed to be our own adversaries to the extant that we can possibly do so.
Yes. Once again, this is why it is so critical to recognize when we are putting forward bad arguments. It is not merely about having the right conclusions or hypothesis in hand. It is about correctly working out our evidential case, and “showing our work.”