Not that they are biased. Bitcoin is giving higher ROI.
It's a gamble, that what it is and your answer is biased.
It is likely that you have not been reading experienced member post on this forum. Take it or you leave it, bitcoin is considered as a speculative asset in short term while a store of value in long term. If the bear market has began, when the price of bitcoin has decreased very well, it will give another opportunity to start DCA or buy at once. Many of us on this forum under this and that is the reason most will go for bitcoin.
Gold is a boring investment for me. It is good for rich people. You can buy just $50 worth of bitcoin or even less but which you can not do with gold. J can buy bitcoin and no one will know I bought it. Gold is physical and needs more money for saving it, unlike bitcoin that will take me just a cold wallet and maybe with multisig wallet to hold in a way no one on earth can have access to my coins.
Just as it is in my earlier list above, you can diversify. But if I should go for one first, I can not think of gold but bitcoin.