It's silly to compare living room games to classic coin-op games. Those were designed (almost) expressly to kill you as often as possible to keep you feeding quarters to the machine.
Games on the earliest consoles needed to do a lot, with very little. Obscene difficulty and limited lives were answers to games that, without such challenge, would be beaten not even in an afternoon, but in, say, an hour. If you could play, say, the first Mega Man or Contra with regenerating health, you'd finish it in, literally, minutes to an hour. Now, despite the various "concessions" developers now make to playability, a modern game with said regenerating health and infinite lives can take upwards of several days to complete. They don't need to obfuscate things with obscene levels of challenge for the consumer to appreciate the perceived value of what they are playing.
(and this doesn't even touch on stodgy or slippery controls or baddies that, quite literally, move faster than the player's character can respond without memory-test training, and what-not, all the stuff that earns games failing grades in today's market)
I don't think that it's really that games are any easier, by and large, it still takes highly trained and adapted hand-eye coordination to even play modern games.
The problem is, is that this is a place comprised largely of a bunch of dedicated gamers who have grown up around games, along with all of their evolution, or are younger gamers who hardly know any alternative to the modern game. It's easy to say that for most of us, our opinion is heavily biased.
When you've been around modern gameplay your entire life, or were able to evolve into it, it intrinsically seems easier-- In much the same way those of the "Baby-Boomer" generation are repeatedly baffled by PC's and modern portable technology, but your average elementary school kid these days probably knew how to use a computer (and troubleshoot, too!) as soon as they could walk and talk!
It's all a matter of perspective.