I see the following opinions (forgive me of I've over-simplified):
1. New FOs from modular training schools don't present a problem and are better trained to deal with cockpit interpersonal issues.
2. New FOs are possibly more likely to generate interpersonal issues as a result of their lack of experience.
3. New FOs come from the new generational need for 'instant gratification' and become frustrated by lack of communication/inadequate explanation.
4. Some older FOs are at fault because they consider that they should be captains and actively fault find to prove their competence over that of the Captain.
5. Some Captains...are just difficult.
6. A combination of all the above? Like all teams, sooner or later you're bound to come across combinations of personalities that just simply clash.
Should we put it to a vote?