I do not agree, if the programmer relies on idiosyncrasies of a system then it's the programmer's fault, no matter how long these idiosyncrasies were in the sys

I do not agree, if the programmer relies on idiosyncrasies of a system then it's the programmer's fault, no matter how long these idiosyncrasies were in the system. It's the programmers job to anticipate on that. It is also a fallacy to think (especially for a programmer) that your program is done when finished, last 40 years have shown that a programmer always has to do maintenance just like buildings and bridges and other infra. Further I agree with what Rasmus states as one of his last remarks in that bug thread: "Wow, a classic case of how not to treat unpaid volunteers who provide critical pieces of your money-making infrastructure." In other words, go make yourself a programming language if you have a big mouth towards volunteers when you scheme of making money with their system fails you, the bloody arrogance.