Well, did you expect the guy who's biggest advertiser is a BPL company to admit there is really a problem? It's much easier to play like a modern day "reporter" and give equal weight to the claims of both sides, even if physical evidence to the contrary jumps up and bites you in the fanny.
The truth is that ARRL's lab did a wonderful job of working with the Homeplug Alliance to develop a product that is much easier on hams. Homeplug-compliant gear is supposed to notch the ham bands by 30 dB. That's enough that if your neighbor has one, it shouldn't kill you, though it might make QRP and DXing much less pleasant. I do not know about the newer Homeplug standard that's coming out now.
Indeed, one BPL solution that's been given a relatively clean bill of health does not use the HF bands on overhead powerlines, and uses Homeplug for the link into the home. If they were all like this, BPL would not be a big threat.
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