Fascinating to me only because that statement is not at all in alignment with my perspective. Granted, that perspective comes from 25 years at a single large EFCA church, which included terms as chairman of the elder board (and hence considered the lay leader of the church). Does mean I had communication with other regional EFCA churches but it also means I was not aware of much with churches outside our immediate geographical region.
In our church and those I interacted with, Swindoll was certainly not viewed as the EFCA's primary preacher. While he was an EFCA pastor in his early churches, his longtime church that he founded, Stonebrier, is not EFCA. We didn't see anyone as the EFCA's primary preacher. In our circle Swindoll was referenced and viewed essentially the same as many other theologically aligned pastors who were prolific writers of solid theology. IMO, the reason for that may be due to both the autonomous nature of the EFCA and the relatively few congregations in our area of the country. Other areas where there are more congregations (CA or the midwest) may have a different view and presentation of Chuck Swindoll. In our case, I am sure nobody or almost nobody joined us because Chuck had 30+ years ago been an EFCA pastor.