What really got me to understand what an NFT is was a post in a gold / silver subredit. A poster asked the question "Where could I find someone who could make a physical NFT gold and silver coin". I really didn't understand what that meant so I asked. They answered that it was going to be a intricately designed coin that was a physical NFT.
This physical NFT was just a coin. Nothing special, no blockchain just a coin.
After this I realized that all these NFT's are completely worthless. You wouldn't buy a physical coin that some random guy (Talented artiest but still) for millions. Why would it be different if its digital?
I could be wrong and NFT's will somehow become the next massive institution but I don't think so.