he also very well may have been put on this earth to display God's wrath. but because we don't know, you're absolutely right and we are to pray for reprobates like this. God knows who are/will be His and who are destined for judgement and condemnation such as Pharaoh

"What if God, although willing to demonstrate His wrath and to make His power known, endured with much patience vessels of wrath prepared for destruction?" Rom 9:22