William Burkitt on 2 Timothy 1:15

By all in Asia, we are to understand very many, almost all, not every individual person: Some think they were teachers in Asia, others that they were private Christians; some that they were his companions and followers, who, when they saw him imprisoned, deserted and left him; and particularly, Phygellus and Hermogenes.

Yet, note here, 1. That he doth not tax them of apostasy from Christ, when he accuses them of forsaking him; it is too harsh to say, that those that forsake a particular ruler of the church, do forsake Christ himself.

Note, 2. In that he says, All that are in Asia are turned away from me, that sin may, and oft-times has the major vote on its side, the generality go one way, and usually the wrong way; sinners, like sheep, run after one another: like fish, swim down the stream together.