Follow the money. The “alternative” sunscreens cost 6 to 10 times as much, per the article.
There will also be a huge black market for sunscreen, plus everyone will be buying it on the internet from Amazon and other sources.
I understand this is all based on ONE study which has been criticized as not having proper controls. But now that it’s been put out there as harmful, under the Precautionary Principle you have to prove it couldn’t happen. You can’t prove a negative.
It’s basically the same problem as everything being known to the State of California to cause cancer. If a rat could get cancer from drinking 200 cups of coffee a day, then you have to prove humans won’t get cancer from drinking one cup a day.