Canadian Politics Today

Well, yes.  Some debates are over.  We don't need to debate the merits of the theory of evolution.  We don't need to debate fundamental human rights, including things like gay and trans rights.  We don't need to debate global warming.

Actually we do.   It is left who unilaterally decided they should not be debated. Specifically:

1) Respecting the right of trans people to dress how they want does not automatically mean society should encourage radical surgeries for mentally ill people. I personally find it unethical to normalize such surgeries and consider anyone who suggests that it should be an option for a child to be a child abuser.

2) Global warming may be a fact but the question about what to do about it, if anything, needs to be debated. The economic case for radical CO2 reduction measures is non existent and people insisting on them are doing so because they are religious zealots who are no different from the people insisting that evolution is false.

But you are proving my point: the left is unable to accept a diversity of ideas and framing their opinions is 'non-negotiable truths' is simply the one of things that people on the left do to rationalize their closed minds.