Thanks for the response. There's a lot of info (as I like posts to have ;) ) so I'll chew on it a bit. And I agree with you as you are right in that there are examples in sutras where people have insights into their past lives, the Buddha talks about his past lives as well, so the question can't be viewed as unanswerable in the absolute sense.
I suppose I meant that it may not be skillful means at an earlier stage of engagement with Buddhism to linger on such questions - though obviously I'm taking a lot of energy talking about my own views on it so I'm either not being skillful myself or I just do find it interesting to think about. The Sabbsava sutras lists similar questions as unskillful questions to ask. But, as I mentioned and as I'm doing now, I think it can be fruitful to go back to these types of questions and answer them at higher and higher stages each time.
Perhaps it can be unskillful if one approaches these questions with a false conception of self, as viewed as some self-propelling svabhava-having entity moving from one body to the next?
But I haven't reached enlightenment yet. So I'm stuck with words.
Now I have some more works that can inform my practice, thanks!
This reminds me of my disappointment with the Prolekult video on the topic when the Ukraine war broke out. Pretty much simplifying it to an imperialist struggle between Russia and the West. And every other leftist group in my area had the same take, at best. Then Oct 7th broke their brains further. What a wasteland here in the West.