Ok, thanks for the “expert” opinion always nice to have that. So this is most likely an accident?
That picture you posted is of a portable derailer. Different railroads have different safety rules. It happens that we’re not allowed to use that style of derailer, because they have proven to be ineffective in preventing cars or locomotives from continuing on a track above a certain speed.
As far derailments are concerned, wait for a report from the NTSB, and a data and TIR download from the lead locomotive before you draw any conclusions. Virtually all derailments are caused by either bad track, ignore warnings at rail crossings, or operator error, usually in that order.
I don’t think most people realize just how much railroads stress safety and safe operating conditions. Whatever caused this derailment will be found, and EVERY railroad in the US will be informed by the NTSB and FRA in a safety briefing as to the cause, expected course of action to prevent it from happening again.