Does God still mean what He says about praying about everything?
Yes. God still means what He says about prayer. When He says to pray without ceasing, that is exactly what He means. When He says to bring supplications, the desires of the heart, praise, and thanksgiving in everything, He still means it. He has not changed.
Les teaches that when God says to pray without ceasing, that is what He means, and when God says in everything to bring supplications, the desires of the heart, praise, and thanksgiving, He still means it because He has not changed. Les also gives another reason believers should pray extra hard: prophecy shows we are in the final days and hours of this age, and the world system is getting ready for the man of sin, the Antichrist. God has left the responsibility to keep the timing aspect on track with born-again believers. In 2 Thessalonians chapter 2, Paul says that day will not come except there come a falling away first, an apostasy or departure of the saints, so the Antichrist will not appear before the church is gone.