I think Canon satisfies photographers. I think the majority of complaints come from consumers that are way more interested in the latest and greatest gear and technology, and like the science of the technology that goes into making cameras and lenses.
But go over to Nikon Rumors and you will see endless complaints about Nikon not listening to their forum experts and how all every Nikon shooter ever wanted was a "true" D700 replacement and a D300 replacement... Basically people will just complain over what they dont have.
While very true my main concern is that the market for people who are not photographers (normal camera consumers) was very large. These are the people who generally bought P&S and rebels. Many are moving to Smart phones others are moving to mirror-less. If Canon losses completely to others in the mirror-less market or becomes a joke in the eyes of consumers. We all lose.
If Canon sells fewer low end cameras the cost or R&D will have to be spread over fewer cameras. That means the cost of all Canon the gear we care about goes up.
I am currently very satisfied with my 6D. I was satisfied with my 60D when I bought it. I was seriously pissed off when they released the EOS M instead of a 70D. My 60D was trashed a month before. The 6D was two expensive at launch so I had to buy a second 60D. I was on the market for a mirror-less camera so I pre-ordered a Nex-6. It could have been a mirror-less Canon to tie me over until the 70D. Over the next year I used my Nex-6 80% of the time the 60D 20% and if it was not for ML it would have been 10% or less.
I plan on using Canon cameras for my wildlife photography and the 6D in low light. But I also plan on buying a few Sony FE lens for my eventual purchase of a full frame Sony mirror-less camera for everything else. Unless things change. I am intentionally moving slowly hoping Canon will do something. But all I see is others releasing innovative products.
For me Does Canon really deserve it? Yes some of it. The 7D was 2-3 years late. The 70D was a year late. The EOS M really should have had a EVF as a option. The 6D is on paper boring even if the image quality if fantastic. Released after the Nikon D600 it just looked plain bad. At the time nobody knew the Nikon was critically flawed oil slinger. Canons WiFi app to remote control is so bad I often think of hacking my own. I thought the Sony WiFi App was bad little did I know Canons was laughably worst. The EOS M is a glorified P&S. I could go on but the complaints about the EOS M have been made elsewhere and do not see the point.
Who knew a company who used to be known as a market leader in innovation could become so conservative. For full frame photographers Canon make excellent gear. Nikon is really only competition at that level. I would chose Canon every time over Nikon. But in the lower end enthusiast cameras everyone is out innovating Canon/Nikon.