This is rocketry, forgetting to secure a maintenance platform is a big deal especially on a piece of equipment as complicated as the soyuz launch pad. Two consecutive failures wouldn’t make for a dumpster fire in most cases, but these are both supposed to be some of the most reliable rocket platforms in the world, and so failures like this are very concerning.

Edit: Finally found a decent picture of the thing that wasn’t secured:

Yeah, no. Fucking up the safety checks on a massive piece of infrastructure like “the enormous platform that you use to put the boosters together” is indicative of a huge systemic failure.

Any protocol worth its weight should account for human error. Every system is perfectly designed to get the results it gets. This system got them a 2 year+ inoperable launch pad.