There is more than one factor to consider. Food is already way past being cheap and plentiful. Further optimizations go into enabling variety. Meanwhile, some prices are
way too low, which is a serious problem in the climate crisis. What's the point of dining on a dirt cheap meat and 15 different flavors of the same yogurt today, only for our grandchildren to starve on a devastated planet?
I was born at the tail end of communism in my region so I haven't experienced the worst parts, but the 20+ years of market optimization in the food space that I actually remember went primarily into variety. There was no point in those 20 years where quality food was scarce or even too expensive for most.
I have people in my family who worked in grocery stores some years ago, when the market managed to optimize these jobs to the point there were a step away from modern slavery. Fortunately, a few large scandals over events like a pregnant employee losing child due to workload made the regulators clean the space up. Today, a chain store employee in Poland earns a reasonable salary and has hard, but not backbreaking work conditions.
There is a point past which things get too optimized, and there is no loss in preventing or reversing that.