Instead of wasting time trying to actively make this decisions and drain your mental energy, why not try semi-passive observation? I found that putting everything away and getting things that I regularly use from that pile, and getting rid of the least used part regularly (weekly, monthly, semi annually, etc.) works best.
This way also decluttering doesn't feel like swimming upstream, at least for me.
The method I mentioned is a way to set things in motion, and your brain unconsciously decides what to keep by getting it from that pile. Then you can give the rest (or some of it) away.
Hope it helps.
The hobbies often change as reaction to changes in environment - you like puzzles when work is underchallenging, but when work is mentally challenging you switch to different past time. You craft because you seen something inspiring, then you make music and some time later return to crafting when something inspiring comes around. You are tired so you do nothing, work was slow and boring so you are in mood to create on weekend.
No reason to ditch tools in the meantime, large benefit of having them is that you can switch impulsively without planning.
Only the author of the article is making her case over the hobby items or tools, however minimalism doesn't dictate the type of item to be reduced.
For a general rule for me, if you are planning to use it, you should keep it. At least in my case this rule works very well and prevents additional purchases effectively.