This is terrible advice. People speculatively trade commodities all the time, including agriculture commodities. They are just as valid of an investment as equities are.
Your advice that commodities are “not an investment vehicle” is simply wrong, and can be proved wrong with very minimal effort. I wonder how everybody you convinced using this rationale is going to feel when they discover it is nonsense…
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.
“Commodities are not an investment vehicle” is incorrect, and the way you are presenting it in this argument is intentionally deceptive.
The first quote seems to be the advice you mean to give most people. The second one seems to be the advice you are actually giving, with the implication that you think it will be more effective when it’s presented deceptively?
I would highly recommend you change your approach here. Because all of these people will one day figure out you lied to them, which will taint the credibility of what should fundamentally be good advice.
Nobody HODL's avocados, there isn't an expectation for bananas to go to the moon eventually.