They are very often trainers.........?
Are they now?
Trainers are PAID by the company to train new guys the COMPANY way, like it or not....and many don't, it would appear.
In an airline, you gotta have standards, and trainers/check pilots are there for just that reason (amoung others), to enforce standards.
Otherwise, it can degenerate into rodeo cowboy time....and the picture is sometimes not pretty as a result.