That statement, just like JLP's entire kangaroo implementation in general, is not reviewed or confirmed by any real expert, and it might be a very contextual statement relative to his implementation and personal opinions at that time, influenced by whatever he was reading or thinking. Also, I don't understand, now you defend Kangaroo or what are you doing?
I have never been against kangaroo, it's just that it's already reached its useful life, that's what I'm saying, there's no way to speed it up if it's not with more computing power,
the rest is smoke.
It's not me saying it, it's what the math says, and you'll say I see that it solves bits 80 faster, yes I know it seems coherent to reach your conclusion, however you made it less efficient in terms of the probability of collisions.
and that's why bit 135 will not be found with thi.
To whom it may be interested in testing the following, don't believe me, just do it yourself.
try the modified kangaroo in a bit that takes you 2 hour to decipher.
then replicate it with the original kangaroo (slower) and you'll see that it solves it in less time.