It doesn't really, unless you overgeneralize your solution (just like the rhetorical question in the title) and make wrong toolset choices. 20 years ago we als

It doesn't really, unless you overgeneralize your solution (just like the rhetorical question in the title) and make wrong toolset choices. 20 years ago we also had fewer choices, hence fewer bug-ridden abstraction layers and moving targets. We mastered one programming environment and target platform, both were much less complex than what we have today. We could also tack something together quickly in an awkward way without putting the code on a world-visible platform as part of our resume. Also, more precautions are necessary today, like security, general code quality (no more tricks that work only on one compiler).