Generally benign, yes. Frequently amusing, most definately. But exasperating quite often.

Usually my frustration arises not from one Kettle, but from the cumulitave frustration of Kettle after Kettle after Kettle. I fully expect to see them clog up security and grab my seat back as they walk back to their seat and stand at the airside outlet chatting with their families as dozens of other pax pile up behind them...but to go though it over and over and over several times a week becomes extremely irritating.

The more frequently you fly, the more beligerant to kettles you become.