Do you ever read things before you post?
What about the rest of your equipment? As I wrote many times, I was doing a "heaviest everything" build. Your 60+ shield doesn't matter shit if you can still roll around wildly - which was not a possibility with my build by the time I was near the end of the game (and I never care for grinding, I just move forward).
I had the full Smough armor, Stone Shield and a Great Club. I could barely do the 2nd worst roll and did not have the spare souls to invest into more stamina (which would make shields more viable).
And with that shield and setup, no, it is not possible to withstand bosses very long, you still rely heavily on dodging even against attacks that could be blocked. And as Blaine said, many attacks aren't even blockable.
Removing the heavy reliance on dodge was the entire point of my build - hence the conclusion that such a "heaviest everything" tank isn't viable without tons of grinding as shields are very weak against bosses if they are main thing you try to rely on.
In addition to shields being a problem, armor is a joke as even the strongest armor is actually pretty damn weak (what's the highest defense value? 19? 20?). See
here how armor works. In summary, wearing no armor means you take far more damage, but the difference between shitty armor and the strongest armor is minor, especially against smaller weapons and even more so if you consider the souls spent on increasing armor-relevant stats could have gone into health or other more viable stats.
All of this is knowledge you could have had if you had just read the whole post you quoted instead of jumping at the part you didn't like.
I'd expect a frigging steel coloss like I had to take at least 50% less damage than a char wearing only rags. But... nope.
And I think the game would be better if it was as it used to be in DS2, as right now in DS3 armor is little more than cosmetics.
They really went all in making dodging around the only really viable strategy in melee (not sure about ranged chars), which is a shame - more viable strategies would have increased replayability more