They are indeed.
I'll point you directly back to the article you're commenting on, the very first question Hexus asked was about the supply issues;
There isn't some conspiracy going on to limit products to consumers or OEMs, it's purely down to limited capacity in ABF substrate that is used as an insulator to most ICs, if you need a primer on how it could have an effect on production of chips etc try Googling "ABF Substrate". The capacity is currently limited, which is being increased (not an overnight solution). Every chip maker that has a design using ABF substrate is going to be in the same situation, considering the volume of new products that have been launched, this is one of the reasons we're seeing supply constraint across the whole board of products that have been released recently by AMD, Nvidia, Sony, Microsoft etc.HEXUS - Appreciating that many hardware tech companies are facing similar challenges from a supply point of view, with industry giants such as TSMC having difficulty in securing enough quantity of essential materials such as ABF substrate, and other components being scarcer and more expensive than usual, I wondered how AMD perceived the situation in the near-term and when it expected supply to get back closer to a long-term normal.
Lisa Su - I think it is fair to say that you've seen some reports of substrate shortages, and we also see tightness in the substrate market. This is more a function of that demand has outstripped overall worldwide capacity. We do see more capacity coming online, including AMD investments, but it takes some time get those online. The industry is overall reacting in ensuring that we do put more capacity online, and I expect that to happen through 2021.
Not some conspiracy theory, it's down to capacity of supplies.