I'm not 100% sure that's true - for example, today we have hugely improved development environments, IDEs, source control, collaboration tools, simulators, debu

I'm not 100% sure that's true - for example, today we have hugely improved development environments, IDEs, source control, collaboration tools, simulators, debuggers, documentation (particularly in terms of easily available and instant access to low level details and also searchability) and so on, which (probably?) make it easier to produce code, and perform tasks that would have been impossible or intractable back then...