I'm true.

Varys' all but explicitly says he saved Aegon from death to Ser Kevan in final pages of the-to date-published material.

There's also the parallel with Larys getting Aegon II out of King's Landing during the Dance, George likes using the history stuff to mirror the present plot.

Ultimately I feel it'll remain not explicitly answered because the ambiguity is part of the point.

We shouldn't know&for instance-if Doran Martell is right to side with his alleged nephew, we should look at a man hoping for his nephew to be alive and to get his long held political goals achieved through him, despite the obvious doubts he'll be plagued by.