I am a little confused now. While I understood that the cables with arrows on them typically only had shielding connected on one side, I thought the arrow pointed in the direction of the desired signal flow.

This implied that the grounding should occur at the side of the cable the signal originated at. Am I misundertanding this or have I just bought into the snake oil?
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Living Room 24x18 open 1/2 flight up to a raised dining room/hall 24x12
Outlaw 976 pre-pro running 5.1 system
Outlaw 750 for Artison Masterpiece LCR and 2 NHT SuperZeros rears
Velodyne Servo FX-1200
LG OLED65C8PUA via HDMI2 to/from 976 HDMI ARC
Roku Ultra
Samsung BD-D5500 BluRay
Amazon FireStick 4K to 976 Aux HDMI input for Amazon Music Ultra