Why not say something forcefully at the time?

Looking at it from a different aspect, some of the later victims could claim that the earlier ones allowed further events to occur due to their silence so might consider sueing them....... Corroboration isn't the same as similar accusations. Corroboration is evidence confirming an allegation. Two people making allegations of different incidents at different times and places isn't corroboration.

Anyway, like I asked, put yourself in the position of a person accused, publicly identified and facing prosecution all on the say-so someone else without any hard evidence?