“ I simply spend more of my free time preparing my self meals to feed my self at work, why are you complaining about being priced out of using communal dining spaces to get food?”

Simplified “I have devoted more of my time to labor related to work because my access to resources has been reduced”

If nothing else it’s just inefficient. Like, a cafeteria or food court is going to provide meals with less overal labor spent than everyone making their own bag lunch. If people want to bring their own lunch, good for them, but economic pressure should not be forcing people to internalize additional labor costs by adopting a less efficient method of mid day meal preparation.