Are there any argument for keep on POW?

Tornado Cash has been sanctioned by the US, prohibiting Americans from interacting with it.

Open-Source and Quadratic Funding

Chainlink confirms that they will only support the main Ethereum chain after the merge. This means most DeFi apps will be completely broken on any fork chains.

Vitalik: Layer-2 scaling will make crypto payments 'make sense' again — KBW 2022