OK, Seriously.
Except for the "bad apples" that we agree exist in all jobs, I don't think anyone here is dumping on screeners qua screeners. Individual screeners are generally respected as individuals (despite the assumption of many that they have made a poor choice of jobs).
"Generic screeners" are dumped on as a proxy for everything that is wrong with the TSA and DHS.
Please don't mistake criticism for the group as criticism of individuals except as specifically indicated.
Your comment about "dishing it back" will certainly be so noted.