Using pretty much any modern case or layout, including all of Corsair's, you can have the PSU intake room ambient. (Even if you don't, most cases don't reach above 35C at the PSU intake point.) I hope that's not generally above 35C. And if it is, you need to hit a pretty narrow load level.
It's not a good thing, but this is a bit blown out of proportion.
Output and build quality's taken a back seat to the feature set of low noise and modularity to hit the price point. That's nothing shocking. It's a downgrade from TX in that sense, and they're admitting it with the 40C rating. Unfortunately, Corsair units outside of CX often don't hit good price points compared to the competition. At MSRP or whatever you want to quote now, they're just not going to look that good.
Yeah, those capacitors what with the fan speed regulation could be in trouble potentially, but if there are problems in five years, Corsair will at least take care of it. But I really don't see why they don't just run the fan at low speeds. It's not like you can hear a decent fan of that size at 500 rpm or so, and that provides a lot more cooling than having it sit idle all the time. I guess it's for the marketing bullet points? Is the zero rpm thing doing well for them ever since they refreshed most lines with that feature?
And finally, HardOCP is what it is. They have their testing methodology they use for power supplies, and this is used no matter what the units being tested are rated for. It's fair in that it's consistent, if you want to think of it that way. And most of the reviewers are very much not interested in noise levels in general. But the results are good, and the data speaks for itself.