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I want to believe
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this post was submitted on 03 Jul 2023
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Gold-plating the connectors is actually one of the few things that does make sense. When new, they won't sound better, but they corrode less, which can, sometime in the future, make a difference, albeit very slight: surface oxidation can form a tiny capacitor. That said, I think you'd be hard-pressed to tell the difference to chrome-plated ones. But unlike lots of other esoteric "high-end" nonsense, this one has at least theoretical technical merit. And the micrometer-scale galvanic gold-plating isn't expensive, either.
Gold/Nickel plating is standard for most connectors nowadays except for the cheapest of contacts, which uses tin plating.
Gold plating can still wear off, because pure gold plating is "soft" and "hard" gold plating is usually done with some kind of mixture with other metals for hardness. And the cost of gold plating depends greatly on the thickness, since most of the cost won't be in materials but in process time.
That being said, if you truly want the absolute best uncorrodible and toughest plating for a connector, look for rhodium plating, but that is VERY expensive.
I think the meme makes more since for any digital connection, where it's literally impossible for the cable to make a difference to the sound quality. I have seen some wacky shit online, like claims of gold plated optical audio cables.
Digital isn't magic. Lower-quality cables can very much make a difference on digital connections, including digital audio, although the effects are very different from analogue signal degradation. Granted, for the low bitrates required for audio you'd have to have a really bad cable/connector. As long as you are above a certain quality threshold, it doesn't matter, but with surface corrosion you may end up with marginal signal levels or degraded signal edges causing more bit errors. What that means depends on the type of protocol and the kind of error detection and error correction. Best case is a very good error correction, and nothing happens. But it may lead to slower transfer speeds due to retransmits, dropouts in real-time connections, or worse.
Less than perfect conductivity or mismatched impedance may also limit the bandwidth, cause reflections, and other nasty signal degradation. It is no joke that some cheap HDMI cables cannot reliably transmit 4k signals, and the higher-quality ones generally have gold-plated contact surfaces for good reason.
The difference in HDMI cables is entirely dependent on which version of HDMi hey are compliant with, it has nothing to do with using gold or any other kind of material. A digital signal is either readable or unreadable with no in-between. The chance of a degraded cable only lowering then quality of the output rather than resulting in total failiure is near impossible.