Commodities can be part of a general portfolio. They can be a reasonable hedge on inflation and, if you are well aware of their markets, reasonable to speculate on. I would surely explain this to anyone i talked to.
That said. "Buy bitcoin/eth/avalanche/shitcoin" is not a nuanced understanding of commodities, and the people i was talking to were not asking if "a responsible percentage of their portfolio should be dedicated to commodities."
These are multiple people in my life, people with no equity positions asking if they should put some of their precious savings into bitcoin or etherium, period, and asking which one. After that we had long talks about investment philosophy.