Dave, accually the airliners have an approach speed of around 140 kias, with touchdown below. In fact, an empty 747-200 is stalled at 86 kias, leaving the approach at 115. Looking at the size, that is one slow bird hanging in the air. Scale that down to model size, and we are talking trainerlike landingspeeds to look good.
The approach to the second goaround in the video is looking scale when judging from ground speed, the one in the first video is definetly way too hot.
Now i do agree that this type of approach is not the easiest to fly nor the safest for the model when something goes wrong, but somewhere inside of me there is this strive to look as real as possible when i take one of my birds up. As for turbine spoolup: i put flaps, speedbrakes and anything i can think of that causes drag out on approach, allowing a higher power setting. When something goes wrong, i flick all of that inside and can go around without even having to add much power. Mean trick, but works....
Another thing to consider is the immense overpower...he does not have to reach full power to go around...the "neccessary" rpm is probably reached in a jiffy, leaving the rest of the spoolup for safety.
You are right, hot approaches are the safest, but to be honest: they don't look good, and at least for me thats not what this is about
Regards
Hank