Some Sins Get Special Attention

2 Peter 2:10 KJV
But chiefly them that walk after the flesh in the lust of uncleanness, and despise government. Presumptuous are they, selfwilled, they are not afraid to speak evil of dignities.

The word chiefly means most of all or especially.
God's Word says that the Lord knows how to reserve the unjust until the day of judgment to be punished - especially those who walk after the flesh and despise government.

The word government means mastery and rulers.
God's judgment rests especially on those who despise mastery, leadership, and rulers in their lives. In fact, it might be implied that the way they walk after the flesh is in their despite of leadership.
They refuse to submit to the authorities God places over their lives,
They choose a path of their own making,
They, being self-willed ignore the instruction and direction of those God places over them, whether that be
in their home,
at the church or
in civil government.

So while all sin is equally sinful in the eyes of God; there are some sins God chooses to judge especially. Those sins specifically are sins of rebellion against leadership.