Overly dramatic.
Decentralization isn't gone. This feature just shifts economic benefit from the miner to the transaction creator. Miners who do this are automatically sacrificing rewards they could have otherwise earned by including a higher paying transaction.
They can't sustainably do this, without the transaction creators paying them in some other way.
The idea has also been around for probably 7 or 8 years. Notice that it hasn't caught on, nor scaled.
To me, this just seems like another avenue to fund what is already a great open source project. If they want a few sats from people that can't be bothered to use a real bitcoin wallet that supports RBF (basically all of them that aren't shitcoin wallets), seems fine by me.
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