You could reflect on the fact that your flight deck contains two people with little knowledge of CRM and how to apply it.
"Two people with little knowledge of CRM." A puzzling observation. Surely you mean one person which clearly is the captain. In any case it is nothing to do with "CRM". More like TEM where the "threat" is the captain.
The original post mentioned a senior captain as the slapper of hands. The bloke in the RH seat was the `victim` of this unprofessional and insulting behaviour by the captain.