There's a well maintained Stearman at my airport, the owner is a member of our EAA chapter and has done presentations on some of the maintenance items of interest. Neat planes, sad to hear about the crash.
The plane is just a machine, there are thousands of those still flying I think, they were a really popular crop-duster platform for decades.
I wonder if they spun. Low & slow, and the witness described what could have been a spin entry.