Sorry, but you are an arse.
BT are flouting safety regulations that are there for a reason. Heavy machinery is incredibly dangerous and working near it is incredibly dangerous. People get killed in the construction industry regularly by it. And the HSE quite rightly come down on you like a ton of bricks if it happens. And similarly if a member of the public is injured. Unlimited fines. They are not using hyperbole.
Sites should be properly designed and that includes pedestrian safety. Pedestrian safety means closing down paths, crossings etc AND PROVIDING PROPER SAFE ALTERNATIVES. The rules are there to protect everyone. BT are being chancers.
This is not the 1920s where a few deaths on a construction site are acceptable. Come back when you have passed your CITB site safety course and then you can express an opinion.