Quoted from emkay:
I was gonna say... To this day our family watches every episode within a week or two of the air date and have watched through all the seasons more than once - and I've been watching since the Tracy Ullman Show. Even got scolded once for showing up at church in a Bart Simpson shirt as a high school kid. Still funny, still relevant. Older and smarter but hopefully we all are.
I'm curious to watch the video posted above but off the rails? No, really don't think so.
I haven't watched current episodes in over 10 years, but my family buys every DVD release, and we binge watch, so I'm caught up to season 17 (plus 20). We were sad to hear when they announced they were not releasing anymore DVDs, but then happy to hear season 18 comes out this Christmas!
I used to watch (and record) current episodes during the 90's, including the re-runs from previous seasons. Seasons 2 to 7 are the reason the show is my all-time favorite, but there are still a lot of gems sprinkled throughout the entire series. Usually there are several jokes/gags/one-liners in every episode I find smart enough for me to continue to enjoy.
I agree with the youtube guy that the shows were "better" early on, but he did a poor job with the examples he used and agree that he cherry-picked in a big way.
One more thing...my wife used to tell me before dinner parties, "No Simpsons references tonight," and I'd always reply, "D'oh!"