However, I've found the seatmaps to be generally accurate for occupied seats. I've even looked before and after picking/switching a seat, and the seatmap accurately (and immediately) reflects that action. So, I do have confidence in the "taken" seats.
This is exactly why I posed the question... I've always found EF to be accurate and I thought it was a bit weird. As long as no one else is assigned to the seat, I'm not complaining