That is grossly taken out of context. Abortion was legal in Florida after Roe v. Wade. DeSantis initially signed a law making abortions after 15 weeks illegal. Pending a ruling from the Supreme Court about the 15 week law, he later signed a law making abortion after six weeks illegal, with provisions for rape, incest, woman's life, etc..
Trump, not being a social conservative himself, didn't agree with this cutback in abortion law. He said, “I think what he did is a terrible thing and a terrible mistake.”
So he signed a bill making abortion legal. What’s the confusion? I didn’tbring up Trump, I was responding to the claim that DeSantis is the only social conservative. If signing an abortion bill is socially conservative, then I suppose he’s a social conservative.