The first news story linked above stressed the B-47s safety record…saying 200 of the 2000 were lost (to all causes…not all of them the fault of the design).
That got me thinking about other jets of the period safety records.
According to WIKI, the Vulcan lost 16 out if 136…which is more than 10%.
I’m not picking on the Vulcan, it’s just the numbers were handy.

My point is that all military high performance jets of that period had bad safety records by today’s…and periodically…standards. As exemplified by the Vulcan which is recalled as having a good safety record.
The causes for mishaps, not just design or tech issues, but training (lack of simulators), operations, and a lack of safety programs like CRM, inadequate weather data, and avionics which haven’t progressed as rapidly as the airframes.

I guess the writer doing the news story felt he had to make the story more exciting.