Generally that's what liking something means, you looked at it, found it agreeable or amusing and liked it. Unfortunately you are also endorsing whatever message the OP is sending regardless of intent, and you are doing it so publicly, that's how social media works.
As for 'Bone dry' tanks, it would be interesting who made that assertion, as the tanks would either have still contained unusable fuel or seawater after being dragged out of the drink, neither would have the tanks dry. Most likely Seawater would have made its way in as it was submerged, displacing some fuel from the tanks.