The talents had nothing to do with money, but the gifts for ministry of the Spirit. The increase would have been the saved, and the maturing of fruit of the Spirit.
National Israel are not Satan's servants. For the first 3.5 years of the Great Tribulation they are hiding from him and protected by God. And they are becoming saved so all Israel becomes saved. Romans 11:25-26. That angers the Antichrist and he goes after the "rest of her offspring" who are grafted into Israel, the Gentile Church. During the second half of the GT, the Antichrist goes after the whole Church, including the newly saved national Israel. No new Gentiles are saved during the GT; they have a strong delusion on them. There will be many martyrs, and many Philadelphians who endure to the end. Those who "come out" of the GT, were nominal Christians when they went "into" the GT, but had to overcome through testing.
But considering the meaning of the word talents back when Jesus was telling this parable, the "talent" represented a monetary value which was determined by the measured weight of metal that the talent was made from. So, your first sentence ignores the actual context of the parable and attributes a different meaning to the word "talent," used in the parable.
As for your second paragraph, the Great tribulation does not figure in the Parable of the Talents as by this time the man who goes away has returned and the little while period is starting to unfold with the Great Tribulation coming into effect after Satan and his armies begin to encircle Jerusalem. This aspect of the End times during the little while period that follows Satan's imprisonment for 1,000 years does not figure in the Parable of the Talents.
However, the Great Tribulation does in part figure in the parable of the Minas when Satan is released from the Bottomless pit after his 1,000 years of imprisonment.
Now the "fruit" that the "Good and faithful servants" brought before their master when he returned was additional "monetary talents." This is what is recorded in the parable for the first and second servant.
The third servant informed the master that he was not entitled to the harvest, to which the master replied: -
26 “But his lord answered and said to him, ‘You wicked and lazy servant, you knew that I reap where I have not sown and gather where I have not scattered seed. 27 So you ought to have deposited my money with the bankers, and at my coming I would have received back my own with interest. 28 So take the talent from him and give it to him who has ten talents.
29 ‘For to everyone who has, more will be given, and he will have abundance; but from him who does not have, even what he has will be taken away. 30 And cast the unprofitable servant into the outer darkness. There will be weeping and gnashing of teeth.’
You are spinning a story to suit your narrative of the last age.
You have hidden Satan from view with your understanding of the parable of the Talents.
You have also mixed the Parable of the Minas with the parable of the Talents. You have missed the point of the fruit that the servants brought to Satan when he returned.
Their fruit that they brought was a monetary increase in the assets of Satan.
In comparison the fruit of the servants who go out to help bring in the harvest in another parable are the fruits of the harvest which is representative of the souls saved during the 1,000 years of the harvest. This was the purpose Jesus intended his Saints to undertake.
Your understanding is flawed.