Nazi Germany is not, but it is still Germany nonetheless. Your proposal is equivalent to the elimination of the concept of Germany in its entirety.
Basing your solution on a state that last existed in 1516 is an awful approach, and ignores the Israeli people’s right to self determination.
Additionally, the number of people who identify as Israeli significantly outnumbers the number of those who identify as Palestinian, so your one state solution still involves a state in which Palestinians continue to be a minority in a nation where Israelis have political control.
And you haven’t even begin to consider how you’d actually make it happen - are you expecting netanyahu to volunteer to join Palestine, or are you proposing a full fledged invasion of Israel, a regional military superpower?
Really, this is one of those situations where an idea is so bad, that it’s not viable to list all the reasons why it’s a bad idea