I don't recognise the 'different world' you describe. Practiced disciplined DR is a key part of modern software engineering at large and small companies across the startup/enterprise spectrum (in my experience). The popularity of tools like Netflix's Chaos Monkey/Gorilla/Kong server as testament to that.
That's not to say all companies do it (it seems GitLab didn't) but the tone of your comment doesn't reflect a lot of people's experiences.