

Certainly there are people that do that or want to use the money for drugs, which is why I always volunteer to buy it for them vs give them money. And I don’t carry cash anyway.
If they’re genuinely hustling for cash they’re unlikely to walk away with you to get food, a bus ticket, whatever because they’re wasting time. I’ve had a few take me up on the offer and then still try to talk me out of cash while walking, but most hustlers just walk away immediately when you call their bluff and offer to buy it for them.
The sailors didn’t just eat meat though… they were typically also eating large amounts of high carb hardtack (biscuits), beans and oats as all were cheap and traveled well. Traditional high carb diets need vitamin C sources or scurvy can occur. A very low carb diet can get by with very little vitamin C because it’s not longer competing with glucose, but of course such a diet was rare in past times. The Inuits diet is one well known exception where the people might go most of a year without plant sources of vitamin C and avoiding deficiencies by eating organ meat which is rich in many vitamins and minerals.