I hope he means it. I like things that last. But "support" can also mean a lot of things.

When Sony, MS or Nintendo say support for some console, that on first place means support with games off course.

Yep.  This is how Nintendo almost always does it, at least when their console is successful.  I am kicking myself that I moved onto the SNES so quickly and didn't even look at the NES again.  The NES got a lot of great games even after the SNES was released.

The real weird exception is the Wii.  I have no idea why Nintendo stopped supporting the Wii.  I can only guess that they thought the 3ds and Wii U would be so successful that they didn't need the Wii anymore.  (Of course they were obviously dead wrong.)

Countless hardware revisions incoming. I wonder whether they're going to be incremental updates, like new 3ds or full blown XB1X style.

It would be exactly Nintendo's style, actually. The Gameboy Color, Nintendo DSi and New 3DS all were faster versions of existing platforms, just like the PS4 Pro. The only handheld that never got a stronger iteration was the GBA and that was probably because its life was cut short by the PSP announcement (Nintendo rushed the original DS to market so Sony wouldn't get a head start with the PSP). 

Make sense, especially if they're consolidating around one hardware line, and can continue to grow their mobile, online and licensing divisions. Given EPD launched several major projects last year, a 7-10 year life-span for one hardware line should guarantee a couple more major waves of EPD titles, not to mention Nintendo's other studios.

Well, if there isn't a Switch Pro coming, i highly doubt Switch can continue to be competitive. And even then, it better be indeed a PRO. Sooner or later, MS and Sony will be releasing new consoles and the gap between Switch and those consoles might be so big that porting to Switch is no longer financially viable. Unless it's ports and more ports, for years to come.

It's already spanking the XBX and PS4 Pro with WiiU ports, what makes you think Nintendo's success depends on horsepower?

If 4K can't beat portability, what makes you think 8K will?

Why would the Nintendo president say otherwise? Maybe I'm missing something here, but console manufacturers stop supporting a system because of other factors in the industry (read: competition). Of course Nintendo would like to support the Switch longer, but if sales are declining they will need to move on. Also, in five years, aren't you going to want Nintendo to come up with something new? The Switch is going to feel uway underpowered by that time.

I think they mean more the brand to be honest. Like in 3 years we could have an upgraded Switch like xbox one x