Him claiming this doesn’t necessarily make it so.
That said the sign our generation is being given is the sign of Romans 1:18-32. So no surprise if it were so.
We should not marvel for Christ Himself wondered if He would find faith when He returned ... but there is always a remnant. Just because the world is going away that doesn’t mean we have to.
There was a point in time after the Lord had said some hard things and many who had been following Him stopped following Him that He turned to the twelve and asked if they would leave too.
Their answer — to whom shall we go, you have the words of eternal life — can be our answer.
If all you can do is cling to the Lord: cling!
He will not send us away even though everyone else is going away.
You are rught. 2nd Timothy is also about the apostasy.