Because it matches the timeline and confirmed by multiple sources as him? https://twitter.com/vitalvegas/status/1332560969747238912?s=...
There's speculation elsewhere about a different house fire in Stratford. And I suspect many other house fires match the timeline.
I looked at the Stratford case too. Doesn’t match. It was a 42 year old adult with 2 other adults and 2 teens. Hsieh is 46. https://patch.com/connecticut/stratford/man-severely-burned-...
And if you look at original TheDay house it’s a waterfront mansion...clearly owned by someone wealthy along with matching the timeline.