Just so we are clear, being a check airman is political, they may not be the best pilots, may not be the best at CRM, but, might, maybe, be the best at kissing ass.
I happen to be a check airman at a large regional carrier and am privileged to work with some of the best pilots in the business. We take new hires who often meet only the minimum requirements to be hired, have never flown a jet, never seen an FMS, never flown for an airline, never flown in congested airspace, etc. Heck, there was a time we even had some new hires who had never been in actual IMC conditions.We take them and turn them into safe, competent airline pilots.
The abilities required to do this and deal with the associated stress and high workload on the flight deck can only be understood by those who do it.
Not a single one of them has the job because they kiss ass. They have it because they are good at what they do. Period.