Sorry, can’t agree. The AF system on your camera isn’t using contrast detection on the image on the screen, it’s looking at the phase difference between the two phase detection sensors behind the mirror. On MILC cameras, which use contrast detection, what you say may be true, but your camera is a DSLR.

Now whether you can SEE any problem or whether the AF could be better and provide sharper images is a different question, and if you’re happy, then God bless and carry on, but on a DSLR, sharp images in the viewfinder don’t necessarily equate to accurate AF with all lenses.

Yes I like reading online because you can search and make print bigger. but you can't if you are in a remote area with no phone service. "Welcome to the 21st Century" where everyone is staring at their cell phone and walking into things. "buy a 3rd party manual." In case one wonders why companies no longer bother, those are the attitudes that allow them to get away with it. Another is that so many amateurs don't even read them. Someone wanted field lessons from me and asked more about shooting in manual. I have Nikon, she had Canon. I said, OK first put your camera in manual. "How do I do that." I was always solving problems for someone else shooting birds with Canon, 600mm F4 lens, who never read the manual. Never used a Canon, but because I understood things from my Nikon could figure things for them, despite the different names and settings. Attitudinal enablers.