Honestly these types of issues can be a bit hard to protest against publicly due to the public perception of it especially in a deeply religious state like Utah. Sort of the reason why some bills get odd names that may be the opposite or have other riders that make them far worse For instance, "So why are you protesting the 'Stop puppy stabbing' bill, do you like stabbing puppies?! Are you a monster", when there was a rider or clause that make the bill terrible. You may think I'm exaggerating but we seen these issues with the colloquially named "Don't Say Gay Bill" where the wording of the bill was quite vague and that was a problem but people going against it were always asked these stupid questions of "Do YoU WaNt TeAcHeRs ShOwInG KiNdErGaNdErS ThRoUgH ThIrD GrAdErS PoRn?"
A school district may not encourage classroom discussion about sexual orientation or gender identity in primary grade levels or in a manner that is not age-appropriate or developmentally appropriate for students.
Like its iffy since this law is super fucking vague and the "Or" is doing some massive lifting right here. So supporters of the bill only care about the K-3 (primary school) part but ignore the 2nd half of the bill (either willfully or ignorantly) and how that is the problem of the bill.