Do you have a source for that? If so, I would not support such legislation. Somehow I don’t think that’s what the legislation does.
I seem to recall reading that at least one of the Texas proposals said that teachers teaching any negative events in American history had to be taught “from multiple perspectives” with no preference given to any - which of course raises the question of what it means to teach the Tulsa massacre (or slavery etc for that matter) from multiple perspectives. Implication was made that teachers would be incentivized not to teach and just avoid a potential legal minefield. Will try to find where I saw this when I have time.