Hm, ok, I think differently from this, to me the scientific way of thinking is about the most refined way of objective analysis to get the understanding that most closely matches how things actually work.
You put forward these questions, "should we rely on empirical evidence exclusively? Why or why not? Should we take a personal accounts seriously? Why or why not?". These can all be answered by logic without personal ethics.
So, if the guidelines you mention that are to be followed are logical in terms of them being suitable to get the most refined possible understanding, fine. No personal ethics in this. Honestly, I'd have a serious problem with following guidelines that mix in personal ethics when determining the answers to such questions...
(Beyond, of course, not violating basic ethics with experimentation blah blah. Such constraints are needed but that's another issue and is not about the way of thinking in science.)
Now, of course, it's possible to link science to human ethics too if you want to have science to serve humanity and I have nothing against this purpose at all (I actually agree with it as long as it does not affect the above type of guidelines of course) and this is even a nice example of logic and ethics interfacing, but it's not required for the above to work.
Just like mathematics also has no ethics in its logic. If you wish to find an ethical purpose for use of mathematics as a science, that's something else.