Cecil Moore wrote:
(snip)
Compared to zero amps of standing wave current when the forward current
phasor and the reflected current phasor are 180 degrees out of phase,
just how much effect can capacitance have?

A standing wave voltage passes exactly as much (AC RMS) current
through a capacitance as a traveling wave voltage does. If there is
voltage at the ends of the coil, then there is capacitive current
driven by those voltages, regardless of whether the voltage is from a
single traveling wave or the superposition of two of them.