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One unremarked advantage of being vegan, or at least a non-dairy vegetarian, is that you don't need a refrigerator. Or even this clever pot thingy.
My own (outrageously unpopular) opinion is that fridges are redundant technological bloat, invented to serve 20th-century America's meat-'n-dairy-loaded diet. I've lived without one for years, including in the tropics.
Doesn't it provide a safe way of preserving food that housing built before personal refrigeration became common won't have (a larder, basement, or even shaded garden)?
Methods of refrigeration become especially important if you do not have a regular way of retrieving food.
Not to mention, even cooked vegan food can and will spoil quicker without refrigeration.
Sure, the invention is great, not disagreeing with that.
Just saying that refrigeration is non-negotiable for meat and dairy, whereas that is not true for almost all non-animal products.