The parent is right. Software engineering is advantaged by a much more simplistic feedback loop. Software's "Hello, World" is validated in milliseconds. Medicine's "Hello, World" could take 30 years of clinical trials to ensure that you haven't killed anyone. It is easy because it is quick, allowing a greater understanding within an equal amount of time.

In fact, the adage of years of experience comes from learning that actually take years to encounter different circumstances and see the results play out in order to fully understand what you're dealing with. This is almost never a problem for software engineers, especially in the learning phase. Software engineers can gain "years of experience" each day by seeing the results of what they are doing in practically real-time.