Why do these articles always go on about stuff being sold out like it means something? Even if it's true, that almost certainly means they've simply been bought up by resellers.

I recently needed a plumbing part. Obviously no one's getting excited about plumbing parts. That was also 'sold out' on the manufacturers website.

In reality there are a thousand resellers selling the thing. Manufacturer doesn't need to have large warehouse or deal with a large number of customers. Resellers get to make a profit by selling for more than the large order unit price they paid. Customers like me get to buy the product at less than the original small order price the manufacturer was asking.