Despite what you've been led to believe, Florida was never teaching young kids about sexuality. Not in third grade or later. The bill will likely be found unconstitutional and never should have become law.
You seem to feel the kids involved all have loving and understanding parents which isn't always true. If the kids cannot go to their parents, why keep them from asking questions to some of the other adults in their lives? Again, schools aren't teaching it, they never were. It's all a political stunt by DeSantis which Nikki Haley has now jumped on.