The links that are included shed more light on things. The write-up linked is a little light on details, and I also expected an actual "flaw". What the other links show is a series of anecdotal reports that the k-series intel processors have been found by end-users to become unstable, and that setting more conservative power management settings in the BIOS helps these chips regain stability.

The argument is that Intel is selling chips that at their out-of-the-box recommended use patterns can wear out extra quickly, and by default are over-volted. So it's not a "flaw" so much as not having a great engineering safety margin for premature wear.