Stop using stupid and faulty fan calculations to make a point. Naruto forums is the king in using fan calcs.
There even a fan calf that puts the like of Heie dark tournament to be in the triple digits of speed because he cut a demons arm, and went back to his spot.
"I'm just going to point out a specific calc that I think is fallacious and use that to argue for calculations in general being inherently faulty".
That's how you sound right now, it being "fan" made or not is of ZERO importance as everything else people do like power-scaling and such is also technically "fan" made, writers generally don't give a shit about it. Calcs are the same, they're SIMPLY a way to quantify feats that occur in the source material, to help vsdebaters in their power-scaling endeavors, and you can't possibly from an opinion on those feats that's more reliable than the calculations by simply eye-balling or relying on your intuitions alone. period. cut the nonsense out
No genius, fan calcs are useless, because 10/10, those calcs are made by fans of said characters that purposely exaggerate numbers to make their characters look good.
Where as powers calling made sense because we the fans already has a basis to work with thanks to the writers.
No one takes calcs seriously because they are bias.
For example, if Silver Surfer travels the distance of 1 light year, in let's say 1 second. How would you find out the speed at which he was travelling? Except for using the S = D/T formula to divide 1 light year by 1 second and get the result, that's EXACTLY what calcs are all about. While they can be faulty with absurd assumptions, maybe the one you mentioned is one of them, but that doesn't discredit the practice of making calculations at all, if anything, that just implies that one needs to improve his/her ability to make calculations. Period
This can't be answered unless you can quantify his speed and reaction times.
Can he react and move several feet to avoid or block attacks within an attosecond? nanosecond? picosecond?