In 3 years, food is up 20%, after several years of extra low inflation, but raw produce is up much less. That's frustrating, and faster then some people's wages, but not extreme.
People who can't afford that should unionize and get paid more for their work, not get weird price subsidized from vendors.
There is cause for concern that prices will continue to increase
have you ever started a local? half the time you can't get a national to commit legal resources so you're screwed if the employer doesn't agree to card check, which they won't
then there's the question of does the union have any real leverage, which varies a lot by industry and trade. ufcw for example has failed both in securing real wins for grocery workers AND in pushing against price gouging by grocers
after being failed by nationals (for me it was usually cwa), tried going more wildcat but iww are just as ineffectual for different reasons, then got involved in the co-op space but groups like usfwc are just as ineffectual for still different reasons