You might be able to legally prevent campaign and PAC contributions. You can't legally prevent political ads on TV. And you certainly can't prevent people from watching TV.
The problem with your second point, which is a common one among conservatives, is that if government does less, those who don't want government action - taxes and regulations for example - will benefit. That is in fact what they're lobbying for right now. For the most part, they aren't looking for government to take action for their benefit. They just want government to not interfere with what they're doing, which is benefiting themselves at the expense of other people. For example, if the government does nothing, then the fossil fuel industry can pollute away with no consequences.