Anyone claiming the deaths were not on purpose doesn’t know the entire history of the Nazi.
Their own statements of purpose and plans and actions are not vague. They fully intended to eliminate, by killing, the Jews.
Claiming otherwise is tantamount to claiming someone saying they are going to punch you and then does so might of only tripped and lost their balance and it was an accident.
Something so quickly organized and so horribly efficient and massive didn’t “just happen.”
It is amazing what happens to historians when they are influenced by Marxian materialism and postmodern madness.