Malachi 2: Does God love sinners?

Malachi preaches against the priests because they sin against the Lord.
Malachi preaches against the men because they divorce from their wives to marry idolatrous women.
So, how can we say that the Lord loves sinners? We read:

17 You make God tired with all your talk.
“How do we tire him out?” you ask.
By saying, “God loves sinners and sin alike. God loves all.” And also by saying, “Judgment? God’s too nice to judge.”

Malachi goes against the preaching that God loves sinners, thus He won't punish anyone. Malachi is warning: the Lord will punish, so repent before it is too late.