Tripadvisor bought SeatGuru in 2007 and let it atrophy about 5 years ago. Data was stale enough to barely be useful. Aerolopa is a much better source today.
Thanks for the background. I didn't know about the Aerolopa site.
Since I went 5 years without leaving the USA (Mar 2020 - Feb 2025), I didn't really need to look anything up so I guess I didn't notice that seatguru had died off.