Is there a word for someone more concerned with tools and methods than results?
Solution 1:
Military equipment collectors and some photographers call themselves "gear whores," while "gear sluts" is self-applied by people in the amateur recording field. Perhaps these somewhat unflattering terms could be used to describe your other examples as well.
See: http://bokeh.digitalrev.com/article/10-signs-you-re-a-gear-whore-us
See: http://www.urbandictionary.com/define.php?term=gear+whore
See: http://www.gearwhorereviews.com
See: https://www.gearslutz.com/board/