Calls: ALSA UCM config not making a difference with volume

[lightwo]

Arch Linux ARM Danctnix + Phosh (GNOME/Purism Calls application).

I tried to change the volume the microphone has during calls as per two sources (1) (2):

/usr/share/alsa/ucm2/PinePhonePro/VoiceCall.conf

Code:

cset "name='ADC Capture Volume' 0"
cset "name='Mono ADC Capture Volume' 0"
                                       
cset "name='IN1 Boost' 0"

However, during calls, the volume on the other end is still unbearably overblown, even after rebooting.

I disabled "headphones" and "front camera" switches if that makes a difference.

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For reference, I also attempted to call under postmarketOS, and the volume wasn't overblown.