Flying Mach...good for you
Eat some humble pie...I doesn't do anyone any harm, from time to time, but remember the basics.
As an FO you will have many stories and opinions to tell, when having graduated to the left seat, you will have even more funnier stories to tell your grandchildren; that's the baeauty of life <s>
But, if you think that 2 years apprenticeship with a charter airline affords the luxury to know all, then go back to square one again, especially in CRM terms.
You may not like it; but given in a true CRM sense