Meh, something being the first of its kind doesn't necessarily imply that it's the best, or even any good. The outhouse earth closet came on the scene way before the modern indoor flush toilet, but I know which I'd prefer.
Look at the DC01 as an example. For the sake of argument I think we can all probably agree it was the first mass marketed vacuum in the UK with two different types of cyclone running in series, but for all that it was still a middling performer at best, even by early 90s standards. An awful lot of uprights we were selling at the time could run rings around the Dyson in terms of hose suction, brush roll agitation and carpet pickup. What the Dyson WAS good at was fluffing up the dirt and putting it on show to make people go Ooooh! At the time it was a novelty, an object of desire, but not automatically any better than the competition by a long shot, despite what the glossy brochure said (so, nothing new there then). They pointed out it had 100% suction, 100% of the time. What they didn't say was that it still had far less suction than a Purepower with a full bag, luckily Hoover had the sense not to let that "accidental" omission slide! I'm only surprised Electrolux didn't seize the opportunity to join the pile-on and give them a spanking of their own.
On the subject of the Cinetic, Dyson will of course have tested this in their labs to beyond buggery and back again, and are probably fairly confident it will perform as advertised. At least I hope that is the case, considering it makes a lot of promises and costs almost half a grand, but as they say in America, some folks could tear up an anvil. Once Joe Public gets his hands on it all bets are off, and they will find ways to screw this thing up that Dyson never even thought of. Yet. Any owner that suffers performance issues with this cleaner that cannot be rectified by simply emptying the bin is going to be absolutely furious, because as far as they are concerned that's all they should have to do with it. The advertising said so, and if it delivers anything less than that promise they will quickly come to the conclusion they'd have been better off buying a Vax, which does everything just as well but for 1/4 to 1/4 of the price.