I think the whole reason software is so productive (economically speaking) is that you can leverage software written by others. Depending on your mindset, you could call that “just plumbing”, but a more positive way to describe it is “using the best tool for the job”. The person who wrote the tool you are using could also think they are “just plumbing”. There’s always layers below you and often layers above you too. Nobody wrote their own stack top to bottom other than the TempleOS guy.