That's just you being amateur rocket scientist on CMF here. We in fact have that other image with another thicker pipe that also survived reentry but clearly sustained far more thermal damage than the 12m pipe. Oh wait, I forgot, that pipe was ALSO the result of a lying village trying to make money from.... oh wait, who were they trying to make money from again? ROFLMAOThe fact is any one of those pipes at any of a number of locations inside the core stage could have survived and could have sustained various degrees of damage, depending on totally unpredictable circumstances around the reentry of the core stage.