alt Hacker NewsYou're heavily leaning on "collision like this" to relate to the exact time stamps for your statement to be true.
It's equality possible to interpret the "like this" to the collision itself, without a focus on the 1 year distance between the creation dates.
So I guess both views are valid.
The inclusion of a timestamp in v7 makes collisions impossible unless the generating systems think that the time is the same down to the millisecond, which makes the temporal distance quite relevant.