Not at all, I think citizens have an obligation to vote, and an obligation to do their research when it's time to vote. But let's say that takes you a week. Why bother being focused on the outrage during the rest of the term? What value is there to you being mad at whatever politician on week 15 of their 208 week term? If anything, I'd say "staying informed" is a hinderance, because you'll always just be focused on the issue-of-the-day and build mental biases rather than being able to take a wider view of what the politician implemented, and how it played out over a period of time afterwards.
Whether you're influenced by facts or "propaganda" unfortunately depends entirely on your own research and critical thinking skills, and has little to do with timing.