Doesnt look like they did much actual damage but it doesn't really matter. The plant's insurance rates have been skyrocketing already, this will drive it up even more. I don't work in the war and murder industry, but at least in mine insurance is a massive operating expense.
Every building they've attacked successfully has completely written off the contents and shut down the property for weeks. Entire factories have been shut down due to successive attacks making them unviable to continue.
Don't underestimate these actions from just one video. Palestine Action are an extremely effective org.
That's not what matters. What matters is actual physical structural damage to the building itself which knocks the entire building out of operation for weeks. You take sledgehammers to the brick work and knock out chunks of the walls and roof, destroy aircon units and security doors, etc etc.
Computers and shit are easily replaceable and the stuff being saved is on the company network so it doesn't even destroy much data or work.
I’ve talked to a few people working in security and compliance with defense contractors. They keep getting caught off guard with protests which makes security and customer compliance a lot more difficult, especially if delivery routes are blocked (which is the majority of protests here), but this is the US I’m talking about. I imagine it’d be worse for companies if they actually started to sabotage the factories instead of standing in a truck’s way