Airspeed was within a couple of knots on final, not "spot on" as I like it
on calm days, but a few thermals didn't help.

The only other thing that I might comment on is the apparent lack of a
relatively nose-high pitch attitude at touchdown. However, both of the
landings I watched included the stall warning horn, so that suggests to me
that the video simply doesn't do a good job of depicting the actual pitch
attitude.

I tend to fly the plane to the ground. As I pull back on the yoke, my goal
is to get the stall horn to kick off and then apply 25 rpm to ease the
plane on the runway. As soon as the wheels touch, I pull the power to
idle. Short runways, I do not do this, power to idle when ever possible.

I am going to guess that you do not reduce your approach speeds based on
landing weight?
If you do not, you are landing too fast and floating down the runway
before landing.
If you are on speed, as you rotate in the roundout to flare, the
aircraft will continue to slow and gently settle onto the runway without
floating.
You shouldn't need power on the approach nor additional power in the
flare.
I fly 180 degree, power off approaches in everything I fly.