Having been one of the those "complaining" in an earlier thread, the question of whether these QC issues (to use your term) bother me, is easy to answer.

No. Certainly, not enough to even momentarily consider taking advantage of the 30 day money back return policy. Nor were they bad enough for my wife (a confirmed technophobe) to complain about it after I sat down with her and showed her how to operate it.
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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