"But you do not have any control what a manufacturer uses on his equipment.” +1
Why should we?
I don’t have power connection issues using my Esoteric, Luxman, and Accuphase devices. If there will be such problems, I will buy original parts to replace failing ones. You may call me “originalist”! If I want something different than is offered by high-end manufacturers, I will build it by myself, and in that case I will have full control!
Power connection is important, but it is not at the top of SQ impact pareto chart for users’ following reputable manufacturer recommendations. We also have no “control” on what transistor/capacitor/PCB-layout-materials/design/clk-jitter/wires/terminals/fuses/chips/etc. used to build our equipment.