I mean, if "climate change" threatens life on earth is it morally "responsible" for a political party to drop it from its platform because it's not polling well?

Link: https://www.msn.com/en-us/news/politics/democrats-rethink-the-climate-pitch-after-election-autopsy-finds-voters-cared-more-about-costs/ar-AA25Hoyn?ocid=entnewsntp&pc=U531&cvid=6a315afce2114280ab062a5fee35d795&ei=43