It is good in some ways that the jargon has gone viral, but for the bad ways, for the prevention of assuming gospel-centrality, it's always good to recalibrate. Here are some related links:

Joe Thorn: Gospel-Centered

Ray Ortlund: Centered On One or The Other

Redeemer City Church: What Is A Gospel-Centered Church?

Joel Lindsey: Why We Need a Gospel-Centered Missional Church