It's probably not great if you're drinking dozens of cans of sugar free soda every day. All I really know is don't take health advice from influencers, especially if they're selling something, and don't take health advice from people who support deregulation (less industry transparency, oversight, and consequences won't make food or anything safer.)
(For science, I'll be a willing test subject to test whether "too much money" is bad for me though)