In an effort to get this thread back on topic...
Boarding at DTW today. Several wheelchairs went on board when a family of 4 approached the GA (2 children under 5 but old enough to each have their own backpacks but no car seats in sight). The GA firmly, but nicely, explained that they were not eligible for preboarding. As they walked away mom was in a huff and said, loud enough for all to hear, "OK, but we are going to be really slow when we do board."
The GA announcement was clear: Pre-board if you need our help getting down the jetway or if you have an FFA-approved car seat that needs to be strapped into the seat."
Perhaps a new designation? DYKHSICB? Don't You Know How Slow I Can Be?