Elon had similar PR until he fired them for not “keeping it real.”

“It’s at 90 PSI and is 80 percent air, 15 percent water, and 5 percent oil,”

Something’s seriously wrong with the air system then, and it will contaminate all their work and compromise the welds. Water is a particularly pernicious contaminant in welding because it causes hydrogen in the weld that will make it brittle and crack.

Welding shops have to be CLEAN. There are some welding processes that can work ok with dirty metal (SMAW with some electrode types) but these only work on mild steel, and these processes really aren’t used in a shop or production setup, more for field work.