There are lots of cases where lying is a crime, and I think most people agree that this is as it should be. So I feel like "I don't want the government to have

There are lots of cases where lying is a crime, and I think most people agree that this is as it should be. So I feel like "I don't want the government to have the authority to decide what is and isn't true" can't possibly be the right reason, because the government already does that and it's not even controversial. For example: Do you feel the same way about, say, drug advertising? Can I tell people my mercury tablets are actually basil and that they cure cancer? What about pretending to be a police officer? What about soliciting investments with false guarantees? I don't think most people feel that these things need to be legal. So it seems more like a nuanced question of where to draw lines than a clear-cut "the government must not be able to punish lying."