I know that not everybody is exactly on board with the Kenobi show, but it is what it is and it’s canon.
So, what about adding some burnt blasters next to the corpses of uncle Owen and aunt Beru? Just to give them a bit more satisfying end.
I don’t think it’s necessary. Maybe we can just assume they were killed before they could get them. The Stormtroopers were obviously quite brutal to them, having burned them to skeletons in a rather short time.