I believe that the manufacturers and the TCNA have a clue on how to do things properly with their products...combined, they have centuries of experience with their contributors. I have and will continue to disagree with you when you blatantly show misuse of those products based on industry standards. That you don't like it, tough! One does not have to do this every day and get paid for it to be able to read and understand the TCNA guidelines or the manufacturer's instructions. When you disregard them, I will continue to point it out. Just like plumbing codes and electrical codes, they are written for those 'what if' situations, things evolve. One difference between those two areas (electrical and plumbing), at least in most of NA, you do NOT need a license and proven capabilities to declare yourself a professional in tiling. Anyone can declare themselves a tiling professional, whether they should be or not, is somewhat irrelevant. There are some good ones, and some real hacks that call themselves pros. While something might work in your situation, things can and often do change...the use pattern changes because of adding children to the home, someone now needs a wheelchair, someone who weighs 500# moves in, you throw a 50th anniversary party, and have a 100 guests...things change. The industry standards understand this, and have tested and approved methods and products that will perform. Failing to follow those is risky. That you choose to sometimes do it your own way, and then offer it up as an example of 'best practices', is just wrong. One does not have to be a pro to see and understand that. You just hate to have that pointed out. One man's experiences is nothing compared to thousands of others and decades of field experience that goes into setting the standards. When you fail to follow, I will try to point it out.
An example: trying to build a bonded mudbed over a decoupling layer. The whole idea of a decoupling layer is to PREVENT bonding, and when you did it, it cracked. This is a great example of how to do things...I expect someone who professes they are a pro, to know and use the products properly.
And, consider that being a pro, what is second nature to you, may be totally foreign to a DIY'er...so, what may be obvious, may require some amplifying information to help explain the why...being curious makes me want to understand not only how, but why...you tend to show how, but not why, and even then, your how is wrong.