The learning from other people’s mistakes comes from a proper investigation, not hot takes. The former takes time - for example, what is the vehicles maintenance regime, is it appropriate, was the work required done, who signed it off, who monitors this kind of thing at the operator, what do they do, what is the audit process, and so on. That all takes time to ascertain.
The delay was caused by a component coming off a wagon and damaging a passenger train coming in the other direction. Both trains were immobilised and the line had to be closed for a period of time whilst both trains were recovered. No one was injured in the incident. This incident was reported to the Rail Accident Investigation Branch for them to investigate, if they deem it necessary to do so. What else is there to say to people at this stage?
It’s the seemingly insatiable appetite to instantly know every detail and discuss it endlessly that I don’t get. You won’t get the full details until a proper RAIB investigation is done and then we will all know.