Such teething problems are natural for any new console still in development, but given the unconventional nature of this console, it was always likely to draw in more.
Normally you wouldn't be hearing about this kind of thing in any design process for a console, but the forced announcement and high global interest mean leaks are inevitable. Some like this one reveal specific problems, te kind of problems which are naturally expected to be resolved over time... What I find interesting from this, is the word 'cheap'. I'm guessing this gripe pertains particuarly to the fourth revisions streaming bandwidth, which developers expected to be better. It wouldn't suprise me at all if Nintendo are avoiding using the latest components to try and keep costs down, in line with company tradition.
Nintendo wont release WiiU until it's perfectly ready, certainly not after their mistakes with the 3DS. They rushed 3DS to market and paid a heavy price, they can do well without the same on the console front.
This console could be akin to another GC, if they make any mistakes in any vital areas. WiiU has to deliver all that's expected from it and more, casuals simply won't buy WiiU in the same droves as they bought the Wii. Persistant rumors suggest Microsoft's new machine will be revealed at E3 with a launch later in the year. Any delay in R&D, even slight, could have severe ramifications.