If you can do the work quicker, then have at it.
FWIW, the Labor Time is set as a standard. This makes the labor time consistent throughout the USA. The tech is only paid based on the Standard time. If the Tech finishes in less time, then he is $$ ahead. If he takes more time, then he loses pay. Consequently, the techs find many methods to save time to complete the job quickly. This is a benefit to the shop and to the tech. The shop can turn more work and the tech earns more scratch.
I'm not 100% sure, but I think the manufacturer of the vehicle sets the Labor time.
The wind here is blowing around 40-50 mph......... 20 mph would be calm. Flags are standing straight out, yard spinners are just a faint image.......drifts are growing longer and deeper. I've seen some house siding skipping down the road....... birds are hovering...... the neighbor's pet rhino lost its hide. So much snow is blowing that it looks like fog. Houses about 200 ft away are faint outlines.......
Most of my life has been in IA, I can not recall severe wind and cold for this length of time or wind chill at these levels. We have -40 to -50F wind chill. WTF!!! This ain't Alaska.............
Next week the forecast is predicting 40F and rain. That should bring some driving fun. Roads are frozen add some melt with rain. We should have an enormous hockey rink to drive on.