Where did the author talk bad about "their entire work"?
Everywhere he said "the Raspberry Pi 3" he's referring to the product as a whole, which is the culmination of all the work the Raspberry Pi Foundation has done to date, ergo the entire article is about their entire work. If he has a problem with only a small part of it then he would have said "the Raspberry Pi 3's bootloader blob" instead.
Hm, I wouldn't see the Raspberry Pi 3 as the "culmination of all their work", but as a tiny part of it. The specific hardware IMHO is the most boring part of what they do. There are tons of cheap-ish ARM dev boards now, there always were in many ways "technically" better boards, for most purposes it doesn't matter that much what the specific Raspberry Pi X looks like (I was really surprised they came out with the 3 so fast, it didn't seem necessary to me). What's interesting in my eyes is the publicity, community, and ecosystem they've managed to attract.
Everywhere he said "the Raspberry Pi 3" he's referring to the product as a whole, which is the culmination of all the work the Raspberry Pi Foundation has done to date, ergo the entire article is about their entire work. If he has a problem with only a small part of it then he would have said "the Raspberry Pi 3's bootloader blob" instead.