It was never the practice of the Roman Catholic Church to proclaim the gospel from the center of the church. This is a practice that became popular in Anglican churches beginning in the 1960’s.
It took its cue from the pre-Vatican II Roman practice at Solemn High Mass of proclaiming the gospel at some distance from the altar, with the deacon facing north. In all but the smallest churches, this was still done within the sanctuary, but closer to the communion rails than to the altar. Some smaller churches had the gospel procession leave the sanctuary and stand immediately outside the rails, but still facing north.
Some High Anglican churches followed this same ritual, but as liturgical changes began, the gospel proclamation shifted to the center aisle, with the explanation that the gospel was proclaimed 'from the midst of the people." It remains popular in Anglican parishes today.
This sounded reasonable but, in fact, it was simply another liturgical innovation. More importantly, then or now, there is no precedent for it in the Roman rite.