[EC900]

To me it looks like that jack is there as a 5th jack stand to keep car either from teetering forward if that was the concern,just added stability to replace that suspension.
No, not a jack point. But the front or rear mounting points are structurally sufficient, the c-channel framing where that jack is located might not take a full load in the center of it and for that matter, the center of any beam is weakest point.