I do not have to learn from it all. I am more than aware of what it means. As well as the completely in my opinion unacceptable attitude of developers in their bias against IE and for that matter other browsers.
My interest in this matter actually started when the now infamous WIN 10 upgrade took place, which "forced" an upgrade to IE11. Out of the blue some sites which work (and still do) when accessed via IE 9/10, now show up all sorts of problems.
Taking this up with that specific very large corporate got back the answer " IE does not adhere to standards, so we cannot guarantee that accessing our websites with IE will work. We suggest you use Browser xx" but IE 9/10 works not IE 11. Basically the answer back was that they will look into it and that is the last ever heard from them.
The second event started in May 2015, when another very large corporate undertook a major " re-write" of their websites ( still on going).
Then IE8/9/10 which used to work perfectly well, now started to generate dozens of errors. Again dealing with that company's web developers generated the same snide remarks "IE does not adhere to standards, therefore blah blah. We suggest you switch Chrome as our websites have been full tested to work with Chrome".
The third incident is even older. Quite a few Government websites have the cheek to post on their websites statements such as " This website has been fully tested with browser xx, and we cannot guarantee that accessing this site with any other browser will work".
The net result is I started running tests on the websites (W3C and HTML Working group HTML5 tests), which I then sent to those corporates. In the one case over 50 000 errors, violations and warnings were listed by the tests.
The answer that came back and I quote, "Some of these have merit to be fixed, especially the duplicate id’s. An updated html report can be found here {detail deleted}.
That said,
browsers are incredibly forgiving and the validator very strict, and unless it is breaking something it’s probably not a high priority."
However one useful piece came out of the response which I took seriously, and that was to look backwards to see why some pages worked with browser X and not with browser IE 11. Hence why I got very interested in browser evaluations such as those to be found at
http://html5test.com/
Every time MS does an update ( the last 2 were days apart, both affecting IE 11) various tiny things stop working on the two sites I have referred to before, and I have to chase them down and change settings to get those sites to work reasonably with IE 11. the same applies to the latest version of Chrome!
What does that tell me as a layman interested in the results not in becoming a developer about the developer profession in SA??
Well this is what my opinion is at the moment seriously reinforced by your attitude.
(1) They are arrogant
(2) They are not masters of the technology they claim to be.
(3) They are not interested in hunting down and fixing errors even when shown what the effect these errors are having on users out there.
(4) They are not prepared to accept criticism.
(5) They are unprofessional.