Austin Holed in particular, who wrote
"F/Os could stomach flying with the DECs a little more easily if they weren't so uniformly useless" and
"and then have to guide them round the network where many of them are out of their depth..."
and then again
"old fart in the LHS" and
"comes as such a shock to have to babysit a DEC"
what you have to realize is "you need balls to be a captain!"
If you ever have a problem on the flight deck you need to speak up - you can't come running to an anonymous forum and crying to everyone here. You need to be able to deal with problems as they arise and sort them out responsibly and diplomatically.
Be a big boy and speak up to the people concerned or keep your little rants about the DECs to yourself!