Answer the question, what are you suppose to tell someone that asks a valid question, and provides a documented example
You tell them the truth. That it is a crap design made by someone who didn't understand what they were doing or understand the damage it is causing.
You point them at your own web site where you did experiments and prove you are drawing current that is over five times the level that the data sheet says damages the arduino.
In the Internet age on the web documents are not worth the paper they are written on. Which you might say includes my site. So do your own experiment and see for yourself.
If you disagree with the results then publish your findings.