Not all SS were recruited from death camps. That logic is flawed. Secondly your second part of the quote illustrates your lack of knowledge for the Finnish War did not end officially until 1947. If your referencing the Norwegian campaign please explain how Norwegian Ski Troops served in SS division yet never served in death camps?
Like I said "for all intents and purposes". It was not over officially, but it sure was lost.
Foreign SS divisions had different rules than the German ones for recruitment. Until 1943, all recruits into the SS were volunteers. Yup, your grandfather had to volunteer to be in the SS, given your time line. In 1943, conscription was allowed, but it only considered Herrenvolk to be conscripted.
The SS divisions that served in Norway were formed from SS-Totenkopfverbände. Of which the 6th were part. It was not a requirement to be from a death or concentration camp. It's just where the formations were recruited from. It's history, and in black and white for anybody to see (including you, if you so wish).