On most printers, the files are either uploaded over WiFi through a web browser or transferred with a flash drive. As long as the slicer runs on your computer, you will be able to print. There are a lot of open source slicers for FDM printers than run on Linux.
Helium doesn’t just kill apple devices, It kills anything with a MEMS oscillator. Helium atoms are so small that it’s impossible to make a seal that completely blocks them.