And if it's meaningless to Bitcoin, why do this on an expensive blockchain?
Bitcoin blockchain is less expensive than Ethereum blockchain. It usually gives cheaper transaction fee than Ethereum blockchain. It is very far since a last time I saw people complained that they had to spend $50 or $100 in transaction fee for their Bitcoin transactions. However, it was repeatedly reported with transactions on Ethereum blockchain.
It makes me think they're only using Bitcoin to profit off it's popularity.
I agree with this point. Those shit BRC-20 meme coins try to exploit the popularity of Bitcoin.
And the people who are throwing their money at it have no idea what they're buying.
It is true too. They simply look for quick rich train and hope on BRC-20 meme train without knowing basics about Bitcoin and short lifespans of meme coins.