Agreed on breakdown.
Everything sounds good: air pressure, 13k miles not that high. Would be worth asking: Was anything hit prior to the blow out? Large pothole, road debris, ??
The guess is: a certain percentage of tires will fail due to separation. Can be caused by a manufacturer defect. Not what we want to hear, but have seen it many times in automotive tires.
Love the TPM on my 2017 long time. Good idea to offer it - at a cost - on all bikes. I still manually check air pressure frequently, and use the TPM to verify what I get with the air gauge. Have done this enough that can tell when a tire is a little low & needs air, but refuse to rely on TPM only since my dinosaur DNA does not completely trust these newfangled thingamabobs.