This is the ignorance I was talking about. There are many reasons to irradiate food besides substandard handling. For instance, potatoes can be irradiated to inhibit sprouting, increasing how long you can store them. And imported fruits can be irradiated to prevent the spread of insects and other pests (without needing to use far riskier pesticides.)
They are useful to people who buy food (who hasn't had some potatoes sprout in a cabinet?), and to society generally. Insects are a fact of fruit, to call that "sketchy" is just ignorant.
If the potatoes last longer without going bad, then there's no reason to replace them prematurely. You have a predicted narrative that any preservation method you aren't comfortable is intrinsically bad because it lowers food quality, but I can guarantee you there are countless other forms of food preservation you have no problem with.
This is a case where the science evolved to justify a pre-decided narrative. This was absolutely necessary for an unsustainable food industry in an overly financialised nation(guess which). Don't waste your breath arguing logically. Just try your level best to ensure it doesn't occur in your local food economy, for the near future. Eventually, the GMO folks will reap.