Ignoring the question of whether this whole crisis is made up:
Those with a clear political agenda aver it.
‘Necessarily’ and ‘all’ are unempirical words, so I’m a naysayer – unlikely that all consequences are necessarily bad. Nature would not be workable if it were so simple, so black and white, as simple-minded people with narrow political agendas will themselves to be.
Among other good things: world population demands may just require areas normally covered by snow for much of the year to become good summer farmland.