Seems like the concept of 'observational comedy' is totally lost on Epoché.
Besides, comedy has to evolve, just like music, film or anything else, otherwise it becomes stale. The likes of South Park do not come from the same type of humour as the early 60s satirists. Saturday Night Live was hugely influenced by Monty Python, and while Monty Python is often great, there is a huge amount of surrealism that means it sometimes feels like throwing a lot at the wall and seeing what sticks; a lot of British comedy institutions are from this surrealist background, from the translating French badly in badly-spoken English with the fetishist Germans in 'Allo, 'Allo, to the absurdist quiz format in Shooting Stars, the creepy 'Deliverance'-style characters of The League Of Gentlemen, to the hipster lunacy in The Mighty Boosh. The other holding pattern in British comedy is Schadenfreude; this is where your typical 'cringe comedy' comes in -often focused around one central character's inherent inability to perceive himself accurately - I'm Alan Partridge, The Office, Operation Good Guys (straddling both surrealism and Schadenfreude), Peter Kay's Phoenix Nights and so on.
Other times, we just want people hitting each other with frying pans (Bottom, The Young Ones).
The reason British comedy is so well-perceived is often to do with its seeming intellectual, perhaps because of the Oxbridge backgrounds of many of its big names (see the likes of QI, Blackadder and Not The Nine O'Clock News) so it can be treated in an élitist manner in some circles, and often to do with the perception, rightly or wrongly, that British comedy is somehow more innovative, and because comedy needs to be kept fresh this makes British comedy seem like it's responsible for progress, even when it is not at all uncommon that the Americans will take those ideas and develop them further than they ever were developed in British shows.
Besides - the likes of the Marx Brothers were American, and they were much, much, much funnier than anything Britain could offer for the best part of forty years after their heyday.