In simple words, an extension from Ordinals.
More info: https://thebitcoinmanual.com/articles/brc-20-tokens/
Discussion
Benefits?
No one , expect for miners earn bitcoins and fees. Until for Node runners is bad, more disk space is coming😁
My initial take on this is that the theoritical space per block for btc is 4 mb, with each block being added less than 4 mb is the lost space forever for btc for which large amount of energy was spent.
As much as I don't support this stuff directly, I support this space utilisation to the fullest if it is by rules and my node see it as a valid block.
🤔