I think that by including political opinions in information that is presented as scientific advice you are liable to put certain people off, and open yourself to being accused of presenting the scientific facts in a way that is biased by your political opinions.
There are people who will agree with the scientific facts, but disagree with what the response should be. And there will be people who reject the science. Indie SAGE is wasting its time with the latter, but for the former group, I think its best not to alienate them, because you have some chance of influencing their response, and making sure their response is not based on wrong or partial facts.