I would take this dude's comment with a small pinch of salt.
So you are ignoring a guy's entire life experience because it conflicts with what you interpret Islam to stand for.
You are obviously not reading the Koran carefully enough:
40:35 They [Kafirs] who dispute the signs [Koran verses] of Allah without authority having reached them are greatly hated by Allah and the believers [Muslims]. So Allah seals up every arrogant, disdainful heart.
h8.24 It is not permissible to give zakat [charity] to a Kafir, or to someone whom one is obliged to support such as a wife or family member.
Here are a few of the Koran references: A Kafir can be mocked–
83:34 On that day the faithful will mock the Kafirs, while they sit on bridal couches and watch them. Should not the Kafirs be paid back for what they did?
A Kafir can be beheaded—
47:4 When you encounter the Kafirs on the battlefield, cut off their heads until you have thoroughly defeated them and then take the prisoners and tie them up firmly.
A Kafir can be plotted against—
86:15 They plot and scheme against you [Mohammed], and I plot and scheme against them. Therefore, deal calmly with the Kafirs and leave them alone for a while.
A Kafir can be terrorized—
8:12 Then your Lord spoke to His angels and said, “I will be with you. Give strength to the believers. I will send terror into the Kafirs’ hearts, cut off their heads and even the tips of their fingers!”