They're 911 calls. Show me one example of a 911 call and its misrepresentation being used to
really harm somebody. Control only means those in power will abuse that control and prohibit its use as a method of ensuring accountability and transparency in how 911 hotlines are run.
Further, I think privacy is worth preserving for privacy's sake. We all have a right to it. But there are times where we have to give up rights in order to serve the interests of the community. I know it's not a popular way of thinking in the US, but it's just a fact of living in a society with other people. We don't have the complete freedom to do anything and everything we want. Giving up the privacy of 911 calls has clear benefits, and I haven't yet seen sufficient evidence that enough harm is caused by them being public to consider otherwise.
Even further, these states aren't making these records private for privacy reasons. You're just playing into their narrative and defending them on morality when they're doing it to cover their asses.