Use patagonia ultralight next to the skin. Washes clean, no odors and can throw away as it's cheap. Ranger hoodie from TAD to keep in the heat and arc'teryx outer layer or US MIL issue goretex to keep dry. F*ck merino.... scratches, stinks, and expensive... not to mention it stays wet. Puffys when wet stay that way.

When people face the possibility of freezing or starving there is little chance they are going to listen to unfounded claims of climate doomsday from a bunch of ultra-rich yacht sailing private jet-setting carbon-spewing hypocrite elites