Bitcoin has a mining centralization problem too buddy, it's a vulnerability to all PoW coins. Monero wasn't 51% attacked, it was about 37% at peak and was a selfish mining attack. If just two BTC pools colluded they could perform the same attack
Bitcoins mining has a larger problem due to ASICS. Only one manufacturer currently makes the most competitive chips to mine Bitcoin which is a major supply chain centralization factor and a backdoor vulnerability. Monero uses RandomX which makes all CPUs roughly as efficient as each other. You could mine on a 20 year old laptop, a VPS or a dedicated server.

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