I wonder if the outcome would have been the same if instead of marking the price down from 9500HUF to 50HUF it was 9499HUF, the test would have still proved the issue.
Surly the question is not how much stress full stop, but how much undue stress?
Some jobs are just inherently stressful, an Account Manager under pressure to get orders/sales over the line at year end, a Support Manager working with irate customers and escalating issues etc etc.
I've seen people go off sick with 'stress' and have staged re-introduction to the workplace, but if the role is inherently stressful maybe they weren't cut out for it in the 1st place.
On the other hand undue levels of stress can be placed upon employees by bad management (usually to try and save their necks after they've messed up in someway), and sometimes people put themselves under pressure by holding themselves to high standards.
Separating the source goes along way to being able to manage it.
Seriously..... as an industry we've been back porting code and implementing browser specific hacks since day 1. Since Netscape Navigator, since every version of IE. Is it a pain? yes but ultimately it's the world we live in and i for one am glad.
If every browser just focused on 'the specs' where would the innovation come from. In fact i'd strongly argue that Apple / iOS is the reason we have such a standard web based eco system at the moment. I mean who remembers the dark days of Java Applets, ActiveX components and browser specific plugins? Apples firm stance on the lack of plugin support was a major factor in their demise and the birth of the amazing rich JS & HTML5 world that many here seem to take for granted.
In short it strikes me as the wines of a spoilt child complaining about their parents forgetting that they are the one's who taught them how to tie their shoes.