It's essentially Ethereum Shitcoins built on Bitcoin. "The BRC-20 token standard utilizes Ordinal inscriptions to deploy token contracts, mint tokens, and transfer tokens".
Discussion
Why they gotta shit on our beautiful #Bitcoin ?
Because Bitcoin will be the only one that withstands the test of time. It'll be here at least another 120 years. Shitcoin blockchains come and go every couple of years. It's a smart move for them. I get why they'd want to do it. It's just a bit sad that it's happening. Eventually the price of doing this will get really expensive and make it not worth it.
They didn’t find their glasses yet. 
We could get mad, or we could thank them for kicking off the next mega speculative bubble that tops out at $300K.