He did yell at Iverson during the thanksgiving dinner but it was very clear that he was having a mental episode when he hit him(by the same token you should blame him for confusing Shiv for his wife, or any other elderly person who has dementia, memory loss, and any other neurological issue). How do you think elderly people behave when they don't know what's going on around them? very often they get scared, aggressive, et cetera.

If you really think that a 80 yr old billionaire would poison their own grandchild, a high profile, US citizen whose father and family is synonymous with one of the largest news networks in the world, then you have other things you need to figure out. Logan knew the food was fine, he was setting the conversation by telling Kendall that he doesn't trust him at all. Hyperbolic? yes. In poor taste? maybe, I'm sure some people laughed at the absurdity of the situation just as they did when he sent his own kids a box of donuts.

The story he was reading to Iverson could very easily be misconstrued as alluding to suicide. You think any person in their right mind would want to read a story to a child that draws morbid real life parallels with their own fathers attempted drowning? Logan asks for something that has action in it so that the child doesn't fixate on the traumatic events that have just happened.