It’s not that significant, IMO. Not dooming, but it’s just fact; any place a president - or other person who needs regular access to one regularly - will often have one installed.

I can’t recall for sure if one was installed in Hilary Clinton’s home while she was secstate or not, but I think there might have been.

Temp SCIFs are setup pretty much anytime & anywhere POTUS travels.

Since Trump made clear he planned on spending a lot of time at Mar a Lago while President, they installed a SCIF.

The REAL question is.... is that SCIF STILL THERE..... THAT would be significant...... :-)