At this time God has given the majority of Jews over to their blinded religion. He is saving the faithful remnant and uniting them to His bride, the Church. It was always God's plan to have one people united under one Messiah inhabiting the new Jerusalem which is above (Gal. 4:26; Heb. 12:22). Peter testified as much in Acts 15:
So God, who knows the heart, acknowledged [the gentiles] by giving them the Holy Spirit, just as He did to [the Jews], and made no distinction between us and them, purifying their hearts by faith.James continues Peter's thoughts and says something truly remarkable:
Simon has declared how God at the first visited the Gentiles to take out of them a people for His name. And with this the words of the prophets agree, just as it is written: 'After this I will return And will rebuild the tabernacle of David, which has fallen down; I will rebuild its ruins, And I will set it up; So that the rest of mankind may seek the Lord, Even all the Gentiles who are called by My name, Says the Lord who does all these things.'James identifies the salvation of the gentiles with the rebuilding of "the tabernacle of David, which has fallen down". This is a reference to the work of the Lord Jesus Christ, who is the true tabernacle of David, torn down and then rebuilt in just three days. In case you missed it, James has spiritualized the OT prophecy and applied it directly to the work of Christ in calling the gentiles to Himself from among the nations.
God has established His new covenant with His people, both Jews and gentiles. The more that gentiles are faithful to the covenant the more Jews will be provoked to jealousy and brought into the kingdom.
That's God's plan and He is sticking to it.
I'm not saying it is not a part of biblical prophecy.
Obviously, if they don't ever rebuild their temple, then it was a wrong scriptural interpretation to include it as an item of futurist biblical interpretation.
If they do rebuild it, then it leaves open the possibility that the Futurists are right. Therefore, It does, in fact, strenghten their position in that they had being predicting the rebuilding as the correct way to interpret scripture..