If you can set aside the music and narration and just watch the video, we can see what some (not all) microbursts look like and how they behave.
At the start of the takeoff run the vis is good off to the right, (slightly less so to the left) in these videos, but rain & wind increase just prior to rotation. The aircraft gets briefly airborne and settles back, hard, onto the runway.
It is apparent in the video that the leading-edge devices are deployed as expected. Could be classic windshear, or "rain-roughened" wing surfaces or a combination of these factors.
Regarding reduced-thrust and assumed temperature power settings, this would have been a full-thrust takeoff given the METARS. But, as always, what we think should be the case doesn't explain the accident, (Sid Dekker, Field Guide to Understanding Human Factors).
This aircraft type has very good recorders and the QAR may have an even more detailed set of parameters so determining aircraft energy, system & power settings, control inputs, accelerations and so on will be (or should be!) straightforward. The CVR will be interesting in terms of any discussions regarding awareness of weather and the decision to takeoff.
NOTE:
Bear in mind that this is time lapse work and the speed with which this "rain bomb" moves may be exaggerated.