Agreed, Huberman (and his guests) strike me as charlatans, with their “protocols” du jour. And given the number of creatine posts on HN of late, I suspect that guerrilla marketing and astroturfing are at play too.
Taking it 2 weeks is not a big investment, and by that time you'll know whenever it works for your body or not.
The thing that's unclear is wherever there are long term health issues when taking a lot of creatine over months and years - but with it being so cheap and highly available by countless cheap brands, astroturfing initiatives would be highly unlikely.