As opposed to a corperate social media site, Lemmy has waaaay lower operating costs (not servers). It’s open source so dev work is volunteer, and there isn’t a bunch of resources dedicated to squeezing users for every penny or appeasing advertisers.
Servers can get pricey for sure, but not having all of that other overhead goes a ways to making it more sustainable.
Miso soup is my go-to breakfast. You can get dashi powder and miso paste, then just heat water in the kettle and combine. I love that it’s warm and flavorful, but actually a pretty light breakfast (which I prefer).