It's like anything else. Once an industry reaches a stage of development it abstracts away the previous stage. Think of it like working on cars. At one time to

It's like anything else. Once an industry reaches a stage of development it abstracts away the previous stage. Think of it like working on cars. At one time to work on a car you needed to he able to fabricate cams. Now you just order parts. Same for electronics and just about everything else. A car technician might be able to tell you how a transmission works, and maybe they could even rebuild one, but usually they'll leave that to specialists and just order the part. Modern developers slap parts together, because the work of building them has been done. I'd say, if the modern developer doesn't understand the parts they're slapping together that's the fault of boty the developer and the person who made the part.