Agreed. There's a definite parallel with the automotive industry here. My parents got me a '66 Mustang when I turned 16 and I was always amazed at how accessible/intelligible things were under the hood compared to the latest models, with their fuel injection and microprocessor-controlled componentry. Tinkering or repairing new cars now requires taking it into a shop with fancy diagnostic gear. End result: fewer and fewer ordinary folks attempting to DIY their car maintenance, and becoming more dependent on specialists.
Is this a good thing or bad thing? Depends on your point of view. On the one side, some people would say that such industrial and technological evolution undermines the core of society. Others would say, "Bring it on, baby!" (though perhaps not quite in those words).
This advancement of complexity in our technology, leading to less tinkerer-accessible devices over time, is a natural phenomenon and a consequence of a society that encourages a division of labor, as ours does. I'll bet that 10,000 years ago, tinkering types were probably complaining about the difficulty in hacking their new-fangled farming and hunting tools. For the nostalgic, here's a cool web vizualization of the various objects we humans have crafted over the years.