Hrm - that's very interesting. I hadn't noticed the lack of attribution, and had assumed it was written by AF. However, may well be someone else.
To me, it's fine that The Leaf publishes stuff like this, but I do think they should indicate authorship -- if someone's writing about why you should buy an (expensive) silver kettle, and the author (and / or editor) happens to sell, or profit (in either cash or tea / teaware) from the sale of, silver kettles... well that doesn't mean that they're full of it, but it might at least make one take what the author has to say about the subject of silver kettles with several grains of salt. That's not to say that I doubt the author of the piece is sincere in believing that a silver kettle is superior.
I personally also have a hard time stomaching the super spiritual / stuff... it's not to say that I don't think tea has some spiritual aspects or that all discussion of qi or traditional Chinese philosophy / religion is BS. But I do think talking about it is sometimes overused as a way to Sell Stuff. You can argue with "this tea tastes good", but it's even harder to argue with something like "this tea has superior qi". And some of the stuff in the article in The Leaf seems like a bit of a stretch ("well you need metal, but only if it's the best possible metal").
I didn't find any direct quotes that were the same in both places, but I didn't do an exhaustive search. If anyone wants to do a more thorough comparison, knock yourself out. It would, of course, be interesting if the author of the piece is also related to Life of Tea (henceforth referred to as LOT).
The site doesn't say who the proprietors are, only: "We are two western-born tea lovers living in China and Taiwan.". I would say that LOT is most likely a combination of David, aka Nada (of Nadacha) and someone else. I have some ideas, but does anyone know for a fact who the second person is?
It's a very tricky area to discuss, because of course many of the people who know the most about tea have some sort of direct or indirect financial stake (tea farmers, vendors, large scale collectors, etc.). These people are the folks who probably, in a lot of ways, have the most knowledge to share. It's very hard to ever know for sure if they're promoting a particular way of doing things because it benefits them, or because they truly believe it's the best way of doing things. However, if you don't listen to these professionals, you'd be stuck taking all your tea advice from chumps like me.
(currently mostly uses stainless steel electric kettles at both work and home)
BTW, I'm "moving" this to the Chinese teaware forum, not because I think it's more appropriate for there than for here, but because I want to have it in both places, and that's the easiest way for me to put a redirect from one to the other.