Talk to a musician or scientist: every "inspiration" is the end result of lots of precursor work
I never said anything about not requiring previous effort - someone who has never played an instrument or studied music is hardly going to be inspired to write a song, are they?
The main point is that disengaging the mind from the task for which inspiration is sought (be it a tricky development problem or writing a new song) will help, and that it's not necessarily a requirement to be away from all electronic devices. For example, you maybe using your smartphone or iPad or whatever to read a technical manual, when an apparently inconsequential piece of information helps everything fall in to place and you are then inspired to fix a previously difficult, unrelated problem.
If we're instead talking about people who only use smart phones and iPads and do so only for light entertainment, and are never bored enough to learn a new skill such as playing guitar, that's another story entirely and I agree it would be a problem - but I don't see that happening any more now than it did in the past. That is a motivational problem, rather than one of "boredom".
Peace,
Andy.