David Onyemata's presence in the middle of the Falcons' defensive line is highlighted as crucial for the team, particularly against a Steelers offense that may rely heavily on the run. A healthy Onyemata, alongside Grady Jarrett, is essential for the Falcons' defensive strategy, especially as they look to improve a pass rush that struggled previously. His performance will be pivotal in creating pressure and capitalizing on potential vulnerabilities in Pittsburgh's offensive line.