People who think Nintendo is dying:
1. Nintendo haters. Ignore them. They were wrong about DS and Wii and they still don't understand what is happening today.
2. Nintendo fans. Have you been following Malstrom, and noticed how much he is speaking for a lot of Nintendo fans? People who bought into the DS in 2005 and the Wii in 2006 because they were excited about Nintendo's old school direction now feel betrayed and are depressed about the future of gaming.
3. Nintendo themselves. Read between the lines. It starts with Nintendo's 2008 holiday lineup bombing. Their public behavior since then has been erratic, most notably and most recently with the too-early Project Cafe announcement. This is not the confident E3 2006 Nintendo who know they are about to take the world by storm. This is a Nintendo who have been shocked by the failure of Wii Music, Animal Crossing Wii, Mario Galaxy 2, Other M, Choo Choo Zelda, and low early 3DS sales, and now don't know what the hell is going on. It's just going to get worse when Ocarina doesn't help 3DS sales, and Waggle Puzzle Zelda sells less than Doggie Zelda.
So ignore the haters, by all means. But don't ignore the former early adopters who aren't buying 3DS and think Cafe sounds lame, and don't ignore Nintendo's own behavior.
"[Our former customers] are unable to find software which they WANT to play."
"The way to solve this problem lies in how to communicate what kind of games [they CAN play]."
Satoru Iwata, Nintendo President. Only slightly paraphrased.