Thing is, AI doesn't need a blockchain, but devs are definitely trying to sell it as a buzzword combination. This trend will be as bad as in ICOS when people seriously thought short time that dental industry would benefit blockchain making the dentacoin 1.6 billion dollar worth in marketcap.
And everyone thought it would be normal as blockchain would solve anything and everything needed a blockchain. Until reality hits. Same will happen with ai. AI doesn't solve anything just by being AI. There will be countless worthless AI solutions that doesn't work that they try to sell to us as layer 1 or layer 2 project in a blockchain.
It is true that block chain and artificial intelligence are two separate fields and not interdependent, however they may be used together for certain applications, Possible use cases of AI and blockchain together include data privacy, security sharing of medical records, and supply chain management, but It is better to consider your risk tolerance before investing in AI coins, as they are relatively new, so there is potential of significant growth in value, but still there is possibility of loss as with any investment. DYOR