This. Repairability and durability are two reasons a lot of 'old tech' is in use. I have a friend who is an engineer with PG&E who is great to take to parties

This. Repairability and durability are two reasons a lot of 'old tech' is in use. I have a friend who is an engineer with PG&E who is great to take to parties full of tech nerds. They're always horrified by the '100 year old tech' running the grid. My take is that they're right to be horrified by the fragility of the grid, but have the 'why' exactly backwards - it isn't the vats of oil that make it fragile.