Read the evidence from the reports and be informed .How do you know he was "practicing habitual sin"? Maybe he did loathe his sin but struggled with it. Maybe God saved him right before he died o rmaybe God saved him years ago.
Paul says in 1 Timothy that he is "the formost sinner". Is Paul being literal here?
12 I thank him who has given me strength, Christ Jesus our Lord, because he judged me faithful, appointing me to his service, 13 though formerly I was a blasphemer, persecutor, and insolent opponent. But I received mercy because I had acted ignorantly in unbelief, 14 and the grace of our Lord overflowed for me with the faith and love that are in Christ Jesus. 15 The saying is trustworthy and deserving of full acceptance, that Christ Jesus came into the world to save sinners, of whom I am the foremost. 16 But I received mercy for this reason, that in me, as the foremost, Jesus Christ might display his perfect patience as an example to those who were to believe in him for eternal life. 17 To the King of the ages, immortal, invisible, the only God, be honor and glory forever and ever. Amen.