In some cases, like with climate change, failing to act at all is functionally the same as acting against a solution. Climate change, among other things, is something where statistically we know that more voters would result in more support for preventing climate change, so it's not just a case of "well what if the voters were all idiots anyways?". We've seen that higher voters turnouts trend in a particular direction regarding particular topics. And ultimately less voter turnout and less people being informed to some degree regarding politics is less democratic by nature.