Ordinals

Some people believe that the bitcoin network is young and unexplored; they are crafting Bitcoin NFTs, where you can mint just about anything on the bitcoin network. it's more like you are mining alongside bitcoin transactions. Starting from the genesis block, they claim each satoshi on the block. And they believe its a scalable solution

Some other people disagree. They say bitcoin is not structured to do that. Satoshi Nakamoto said A Block couldn't be more than 4MB in size; this all adds up to how it is 10mins to mine a block. They also claim that the idea is not scalable and that the bitcoin network doesn't have a smart contract capability, so there won't be a real value behind it. People, particularly programmers, won't be able to build businesses around it, and that, in fact, is the real why Ethereum is built.

Ordinals are more like bitcoin maximalism, so it gets more intense they want to explore and play with the source code, scale it, and see how powerful it can be.