I think part of the problem is every issue has became political.
Even issues that really shouldn't be political. Like if humans are causing global warming. So if you were to write a science fiction book about a future devastated by global warming, then it is a political statement.
Science fiction points out what if scenarios, and how would the world be if they follow down a particular sliding scale.
Political debate today has long gone past intelligent debate and fear mongering on the sliding scale worst case scenarios.
Most of the political debates today are science fiction. If you vote Republican you will create a future where there will be a small section of Wealthy elites, and a huge slave class serving them. If you vote Democrat then you will create a future where all your rights are micromanaged by big government.
However science fiction is fiction... It takes the worse case scenarios... Are we living in a 1984 future? No... However there are elements that did come from it, however there are also protections that have prevented it from reaching the worst case scenario.
In terms of politics, good politics is about working on the issues that are at hand for the short/mid term. This long term forecasting, while effective for getting people polarized to vote for you, is bad at actually working on the issues. The debate for global warming, shouldn't be if it is there or not. But what would be the proper balance for correcting it? Efficiency, Economy, deployability of less carbon energy. How to transition workers in Fossil fuel energy to other sectors. How much the government should mandate vs. allowing free market to follow its own trends. Looking at legacy rules and regulations that may may getting new energy source difficult... There is plenty of room for political debate with trying to mitigate climate change.
But it makes politics boring, and not fit for prime time, vs. showing a future, where the statue of liberty is under 10 feet of water, and New York City is covered. Or where a made up Crisis is made to get people to drop all their worldly possessions and follow the guiding rules of the government.