picture in post 9 disproves it all
that contrail would have dispersed nearer to the lower ‘source’ if it was just a plane
it HAD to be rising, and fast, or else the contrail that was minutes old, the lower contrail would have been drifted and dispersed
note the MIDDLE of the contrail is expanded, or it is just changing direction in flight, like a missile would, not a plane
and I have been around planes for years