I certainly agree with your last paragraph, and I do agree that the metric is a bit flawed and not apples to apples directly. But I think it’s certainly relevant that Monero developers chose to prioritize consumer grade mining over security.
Even if I cannot take 1% of the hash of the Bitcoin network and use it to mine RandomX, a sophisticated player could certainly take a CPU farm and mine it. And the amount of energy required to reverse hours, or even days of monero transactions is tiny compared to the amount it would take on Bitcoin.
Ultimately, people are free to do as they wish. I want to try and create a world with as many people as possible under the economic consensus of 21M, and therefore I will always advocate for building privacy on Bitcoin layers instead of doing shitcoin swaps.