I think this misses the broader point of how revolutionary they were. They were hugely original and experimental, breaking with a lot of comedy conventions and redefining them. They've been compared to The Beatles for good reason. They were never the same kind of worldwide phenomenon, but they were equally influential.
Sure. They may have had their misses, but the Pythons were exceptional. A classic TV show, two fantastic movies (plus a flawed one), a live stage show that's become a classic — they were among the best of their era, and we're still talking about them.