What did Paul mean by "we" in 1 Thess 4:17

1Th 4:16-17 For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first.
Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord.

When Paul said, "Then WE who are alive...," did he believe he would be still alive at this meeting in the air?

Matthew Henry explains it by changing the pronouns: "Those that shall be found alive will then be changed. They shall be caught up together with them in the clouds, to meet the Lord in the air, v. 17."

(we who ---> those that)

But he doesn't discuss Paul's apparent self-inclusion.

JFB: "Again he says, "we," recommending thus the expression to Christians of all ages, each generation bequeathing to the succeeding one a continually increasing obligation to look for the coming of the Lord. [EDMUNDS]."

John Chrysostom, in his Homily on 1 Thessalonians 8, says, “He says not this as if he himself were to remain until the Resurrection, but speaking of the common condition of mankind.” And, “By saying ‘we,’ he does not affirm that he himself shall be of the number, but he speaks in the person of those who shall then be alive.”

Theodoret of Cyrus says that 'we” is pedagogical and inclusive: "Paul uses the first person to join himself to the faithful, not to declare that he will survive until the Lord’s coming."

Ambrosiaster (Commentary on 1 Thessalonians 4:15–17) “When he says ‘we who are alive,’ he does not assert that he himself will remain until the coming of the Lord, but he speaks in the common person of the Church.”

Augustine (City of God, Book 20, ch. 20) “The apostle speaks in the person of the whole Church, which awaits the coming of Christ; not that he foretold that he himself would be alive at that time.”

Augustine (Enchiridion, ch. 88) “When the apostles speak thus, they are not predicting their own survival, but expressing the common hope of the faithful.”