That message that Peter wrote towards the end of his life was aimed at all people of the Church. But he does mentions “Last Days Scoffers”, which could easily mean then (Dispensation of Grace) or now as we edge ever closer to The Lord’s Return.
Israel is a nation again after 1,878 years of being dispersed. That is the “super sign” that we’re close..
So it has been explained to me. But it has proven to be not such a clear sign as related to the coming of the Lord. As you may recall, most people who were heavy into the novel dispensationalist reckoning of the End Times back in the 1970's and 1980's took this as a sign that the Lord's coming would be within a generation, which they took as 40 years. Since that didn't pan out, they have had to arbitrarily adjust what is meant by "generation". There is no way to definitely look at these Scriptures and interpret them to say, "This news event points to this, and that news event points to that." It is a moving target because only God has any idea. He will let his true believers, the remnant at that time, know. No formulations will be necessary, and there will be no doubt. We are to be ready at all times.