Nonnie, I just wrote a brilliant and thoughtful reply to you only to lose it! ;) So I will have to wing it...
I agree with you there are always exceptions. We are human after all.
I want to mention that I do believe in mental health and a narcissism diagnosis. (Didn't want you thinking I stick my head in the sand and live in a world of puppy dogs and rainbows ;) )
However, I don't believe there is an epidemic of narcissism with either the current parent generation or the current grandparent generation, despite what both will claim.
I think there is a natural conflict between generations, those who have "been there and done that" and want to share their experience and believe that those who follow behind them should listen to their point of view. And those who want to chart their own course, have their own interpretation of their up bringing and are willing to make their own mistakes as they do so.
Neither is wrong. Often times conflicts arise between these generations due to "mis-matched expectations" and poor communication. I am certainly guilty of both of these in my life. All I can do is learn from my mistakes and do my best not to repeat them.
However, I think there is a new dynamic at play in the current Adult Child/Grandparent relationship that other PP have wisely pointed out.
That is the internet and all that comes with it. Instant communication, social media, access to blogs, boards and support sites.
I think these things can all fuel the fire and create tension and issues where there didn't use to be.
If you would allow me to explain:
Instant communication - we all know these days when you call or text t someone they are almost always alerted immediately. After all, don't we (almost all of us) have phone in our hands or on our person at all times? So, when calls are not picked up or text messages are not immediately returned feelings get hurt. Just like we get irritated when people call us often when we believe they know we are busy (working, dinner time, kids bath time, etc).
Social media - Never before have we had such an intimate peak into the lives of other people. There are wonderful things about social media. Being able to connect and stay connected with friends and family is the biggest I can think of. But it's ripe for hurt feelings and miscommunication. Parents get upset when grandparents share or over share info/pics about their children. Grandparents get upset to see activities they were not invited too, or the "other" grandparents getting time they didn't. These were not issues before the web.
Blogs and support boards - We see it all the time, on both grandparent support boards and parent support boards .... the echo chamber. Support is wonderful, please don't get be wrong. But I often feel on these boards that people post one sided stories looking to vent and commiserate with one another. Rarely is actual constructive and helpful advice given, more times than not its fueling the OPs fire and then a story about their own experience of how they too can relate. While comforting, I doubt this helps the OP make the changes they need to to fix the problem (the problem, of course, not always the OP. But the only person the OP can control is themself, so thats where the change needs to be).
These are echo chambers, fueling the fire and inevitably the "narcissist" label gets thrown out, everyone agrees there is nothing to be done about the unreasonable person and moves on to the next thread. But the poor OP is left without help. I feel like in generations past, to your point, grandparents most certainly complained about their AC. But, they didn't do it to a message board will of like minded strangers. They (I'm sure carefully) complained to their family and close friends, whom no doubt also had a relationship with their AC and could offer constructive support or guidance to help the OP. I imagine many situations were defused this way, as opposed to today where the anonymity of the internet and access of like minded, equally hurt and wounded souls just fuels their fire.
(Again, this happens on both MIL/Grandparent and DIL/Adult Child boards). There is one board out there that I've seen that really holds the OP accountable for their own role in the issue and encourages communication. It's a tough love board for Adult Children dealing with MIL/Grandparent issues - it can be rough, but they really help.
Phew! So, I suppose what I'm saying is that I do believe it's generally a generational issue. But there are exceptions for true narcissism, though rare. But overall, I think we are human and people felt the way we feel now in previous generations and will feel the way we feel now in future generations. It just seems worse at times due to our changing world. But people don't change, IMO.