===> "I simply maintain that ideally, you want this load to remain as pure as possible, especially when using amps that are sensitive to loads which are usually lower powered."What you just said advocates the use of impedance compensating networks with loudspeakers because they make the load more pure.
===> "Why all the fuss for connecting one amp to one coil??"
There are several benefits for biamping and triamping, and most don't have anything to do with load impedance, response shaping or speaker voicing. Those are separate issues, and they shouldn't be confused as being related.
Biamping and triamping are great ideas so don't misunderstand my meaning. It isn't because the voice coil is pure though; It isn't about that. What it IS about is using rhetorical comments about "purity" where the description doesn't fit.
IMHO, YMMV and all the other usual disclaimers apply.