In my experience, atheists and Christians commonly strawman each other. For example, the atheist criticizing Christianity assumes Christianity includes a narrow exclusivism with eternal conscious torment so that, for example, the 10-year-old Jewish girl who dies in Auschwitz goes straight to hell. Such a view has nothing, per se, to do with Christianity.
To be sure, the Christian regularly returns the favor by assuming that atheism entails a bracing nihilism and metaphysical reductionism such that life has no meaning or value and human beings are only hunks of data-processing meat.
Each of these views represents the most implausible and problematic expressions of their respective positions and thus to reject Christianity or atheism on such grounds is classic strawmanning.