Scholar,
That was nearly 88 years ago and those people who stood up were not children.
It is clear in retrospect that they were not the great crowd as JW's understand the term. The great crowd comes out of (i.e. survives) the great tribulation and those people did not even live to see it.
You can call it bright flash of light if you want. I would call it a rip in the fabric of JW theology that must needs be fixed. The idea that the proximity of the end justified the identification of the great crowd in 1935 might have made sense 50 years ago, but it just doesn't work anymore.
Salvation, the Ransom and the two Christian hopes are not trivial doctrines and modifying the significance of 1914 might actually be easier than tinkering with them.