So he’s going to destroy the Kaaba when there are no Muslims left on earth. Would the person himself be aware of that fact? That sounds like an L to me. They couldn’t take it when Muslims defended but they finally get the chance during the end times and in a time when there isn’t a single Muslim left on earth. What would he achieve by doing that?That's an interesting theory. In all probability they will dig under the mosque and cause it to collapse in on itself and blame an earthquake or some other natural disaster for the collapse.
Also the Muslims will be taken by the time the Kaaba will be destroyed by the man from the lineage of Abraha the Ethiopian.
It's amazing the Kaaba will be destroyed by an Ethiopian, in the exact manner it was almost destroyed many centuries ago.