I still wish someone would explain to me what the neck and other left-hand considerations have to do with fingerpicking.

I realize that complex playing, with single-string melody notes mixed in with your basic-rhythm strumming or bass-thumping or whatever, places greater demands on left-hand technique than does beginner-level chord-strumming. But this holds true regardless of whether said high-level playing is being done with a flatpick, a set of fingerpicks, or a handful of bare fingers. Good flatpickers can produce some very dazzling playing, just as advanced as anything possible for even the most skilled fingerpicker.

Indeed, there are some advanced flatpicking techniques that simply cannot be duplicated with fingerpicks (e.g., high-speed bluegrass and related C&W Nashville-cat styles). And the reverse is true, too ~ there are some other things that can be done only by fingerpicking.

Either way, I can easily understand that advanced, sophisticated playing that uses any right-hand picking techniques makes great demands on the left hand, and increases the need to a physically player-friendly neck and fretboard. But, again, I cannot for the life of me understand how a more comfortable neck has anything to do with a player's ability to fingerpick.