Interesting thought. I think most issues stem from bigot assholes who consume the produce but are not allowed to due to their background/upbringing/social “norms”. And those within their normative set not willing to provide, because of the same background/upbringing/social context.
Also, w/o currency there will be other forms of compensation, like a certain amount of work time, or… (p.e.) a handful of apples… due for a certain set of services.
Additionally there is always a percentage of plain idiots who would socially not be able to ascertain this kind of services w/o paying, and these seem to need to demonize the servicer to feel better about themselves.
Sry if I busted this comment, brain is fried after work.