Dealing in absolutes

"I am afraid that Kunal is no good to do unplanned trips with. He is too used to comforts and keeps complaining if things are a bit rough." I was saying when my friend cut me short. "I don't like talking ill of friends like this" Huh? What exactly was that? I mean, yeah, I would not like to go on impromptu trips with Kunal again, and was saying so, but 'talking ill of him'? It is not like