I flew in coach 7 times in the last week. On those flights, not one FA proactively offered me my 1K benefit, and one FA even refused to give me a BOB item without charging my CC (I didn't escalate it to the purser because I didn't want to make a scene and seem like an overly-entitled jerk). I guess it's just poor training because there is no shortage of 1Ks sitting in Y these days.