They probably talk shit about the others' code to their faces. After 30 years, they are probably like siblings. All the politeness and sugarcoating is gone. Say

They probably talk shit about the others' code to their faces. After 30 years, they are probably like siblings. All the politeness and sugarcoating is gone. Say how you feel and move on. They are also probably intimately familiar with each other's preferences and they likely just don't care. "Bob doesn't like it when I do this but fuck him"