After years of dealing with my H's crap & also being a computer engineer that knew exactly was going on, I had no feelings to support him after all those years with all his excuses for the things he was whining about, he pushed me to the point that no sympathy existed for the situations he got himself into & I usually called him on his rediculous excuses. He is still pulling that crap....I left 11 years ago as I couldn't tolerate him any longer.
Depends on the foundation of yoyr relationship how it gets handled. I realized there was no foundation & by that point I didm't care what I said to him. So your foundational relationship is important determination in how you handle it.