Steam. The support they have for multiplatform almost feels open source and they have been invaluable for the adoption of desktop Linux

This is exactly what flatpaks were meant to do. Simplify the program deployment across all distros

Not really. Truly no printed plastic is food safe due to the pores created during the printing process. These pores can house hard to clean bacteria.

There are coatings you can use to eliminate pores that are food safe. But I’m not familiar with them so I couldn’t really point you in the right direction sorry.