That must be Vehicular Cycling because that's the way most car drivers do it, also.

For the O.P., no I don't ride the same way I did as a child, but, like John Forester, the majority of cyclists that I see DO. Only on the sidewalk, never in the street. Not stopping to see if the street is clear and riding back and forth between street and sidewalk. I'd say that at least half the adults I see that "appear" new to commuting on a bicycle even stay on the sidewalk even with a wide bike lane where there's no parking. These people stop and dismount at every street crossing and never leave the crosswalk at a light.

I had a cyclist turn left in front of me this week at work. The street was plenty wide, and he made his left turn from near the right curb without signaling, or even looking. He must have done something, because I had a suspicion and slowed down as I got closer. Yes, the majority of cyclists I see still ride like all the kids out on bikes.