Like it or not, the first game that revolutionized raiding as we know today was World of Warcraft. For many of us, me included obviously, that was our first true MMORPG. Raiding in MMOs at that time was not really a huge thing (EQ aside) and the concept of 40 man raids was still a very new thing. Keep in mind that was back in 2004. To be in a 40 man or subsequently 25 man raid requires a significant time commitment. The demographics of players that have that much time to commit to a game probably was those in college or high school. Now 10 years on, these college and high school students probably are married and have a job and just don't have that much time to invest in a game anymore. I have met many players who come from those games and they would love to be able to spend that much time but cannot due to real life commitments. Coupled with the fact that the younger generation of gamers are used to MOBA and FPS games that typically end in <30 minutes, this is why I feel we have the situation as we have today. I come from that generation of gamers like the OP so when I see people say they don't have time to commit to a static, I feel somewhat puzzled and confused because honestly like the OP mentioned, the amount of end game content in this game is pathetically little in mmo standards. Of course the problem is exacerbated by the lockout system tied to your character instead of your job but that is a discussion for another time.
To be honest, I was quite surprised of the term "static" when I started playing this game. Back in Wow, there was no such term, or rather no need for such a term because people just logged on almost every night and we would naturally have enough people for raiding, even if it was 25 or 40 man per raid. People understood that it took time and commitment to learn a boss and wiping to a boss when learning mechanics was a given, and implicitly assumed to be the case. Nowadays when I see parties disband after 2-3 wipes, I just smh. But even with the concept of "static" introduced in this game, and with statics being only 8 players, I've been in numerous statics that have broken up or implode because just 1-2 players are not able to log on for the night and over time it gets frustrating for others who want to do the content.
The LFR system, or duty finder also promotes this casual mindset. Why do you need to commit to a group or static when I can just put myself in a DF or PF and play the same content? Back before this system was introduced, the members of a raid were more close knit because you always raided with the same players and you had to prove yourself to be accepted into one. Nowadays, if you are bad, just leave and find another group in the PF.
I probably digressed and said too much but i was trying to share my opinion of the state of raiding in today's mmo. One thing is for certain though, the days of 40 man molten core and Zulgurub are long gone and anyone who thinks they can come back are clearly delusional. Maybe its just time to face reality that I'm too old and take a step back from mmo's for a while.