Are we noobs here or is this a tech forum where people might reasonably be expected to know the difference between Bitcoin and Ethereum? I'd argue it's the latter.

You can't say that Bitcoin is responsible in a discussion about GPU shortages. It's flat-out wrong and obfuscates the actual problem. It's Ethereum that's mostly responsible for said shortage, and seeing as how Ethereum is moving to proof of stake soon that problem might be alleviated. Bitcoin uses all custom hardware for mining and is not affecting the GPU shortage. The problem with Bitcoin mining is power consumption, not chip contention.