I think there should be less worry as to which ingredient plays a more crucial role - until the player is able to discern that tone is not about sound only.
I don't think spectacular equipment encourages feel as much as doing things like - playing loud, composing, jamming and challenging personal norms. In addition, I think we forget that in today's world - many, many things that "qualify" as crap are actually quite improved from the past.
A familiar experience is watching great sounding/feeling musicians tear it up with "mediocre"/"crappy" gear... and we have 10x better (read: pricier) gear.
That said, I would be unable to grade the ingredients of tone. I don't think the pickups component is any lesser than the amp or gadgets because pickups affect the overall feel A LOT.