Poor conjecture based on misinterpretations of scritpure.
Romans 11:29 "For the gifts and the calling of God are irrevocable."
Tongues won't pass away until knowledge passes away, and that won't occur until Christ returns.
1 Cor 1:7 "Therefore you do not lack any spiritual gift as you eagerly wait for our Lord Jesus Christ to be revealed."
Really?
When the purpose of the gift was for unbelieving Jews (1Cor.14:21) who were suppose to receive signs (1Cor.1:22).
Now, in the initial stage of Christianity, the Gospel was to go first to the Jew and then to the Gentile.
It was only after the rejection by the Jew that the Gospel was to go to both equally.
Tongues was for the evangelism of the Jew and ceased when Israel ceased to be a nation in 70 AD.
Romans 11:29 "For the gifts and the calling of God are irrevocable."
Really?
So we still have Apostles?
We still have the gift of healing?
We still have people predicting the future?
So some gifts were transitional.
In fact, in Romans you do not see the gift of tongues even mentioned (it being a later book).
We know that Paul eventually lost the gift of healing because he could not heal his own friend (2Tim.4:20).
Romans 11 is speaking to the fact that God has made an unconditional Covenant with Israel, and that Covenant will be completed (Rom.11:25-26)
Tongues won't pass away until knowledge passes away, and that won't occur until Christ returns.
No Tongues, Prophecy and knowledge were temporary gifts, as Paul states in the next verse, they were for children, when I spake as a child (tongues), I understood as a child (prophecy), I thought as a child (knowledge) were all gifts that in function to stabilize the local church until the Canon of Scripture (NT) was complete.
Paul put away childish things and thought as a man, not as a child, that was his admonition against the Corinthians, to grow up, and go from milk to meat (1Cor.3:1-2)
1 Cor 1:7 "Therefore you do not lack any spiritual gift as you eagerly wait for our Lord Jesus Christ to be revealed."
And the Corinthians were rebuked in 1st Corinthians for their licentious and immature behavior.
Paul makes it very clear in 1Cor. that the issue is not the gift but the fruit one bears (1Cor.13).