Visited here Christmas day 2021. Took me 4 different Thailand trips to finally get a seat. For the amount of stuff crabs inside, yeah it was worth it. Her other dish was good too. Yeah, it definitely is an Instagram thing.
As far as actual waiting time, I never waited long. They say it's full, I say okay, I go somewhere else. The pandemic probably helped to finally succeed at getting a seat. I may have waited 5 minutes when I was finally successful. It took another 40+ minutes or so to finally have the food prepared.