Absolutely not. What Heaney strives to do in his writing is to present heartfelt portrayals of the Ireland he knows and loves and the context in which it exists. Because history and past events have been so central to the shaping of much of the Irish experience, the influence of those events is often present. His writings can and do deal with present-day issues and concerns, including how those concerns are impacted by the history behind them.
I would now say that history is not the only way Heaney talks about and links the present, but also autobiography (his personal history) and mythology. He often uses many Norse mythological figures.