Crossing 5 KM to get to AfO 30 seconds puts him at least half the speed of sound already. Thats of course a lowball as All Might beat up on Nomus and had a conversation before he went to AfO. Those things would eat up a chunk of those 30 seconds.
https://youtu.be/JhUZP4ZjJqA?t=43
Here he crosses hundreds of meters in a fraction of a second. Kind of a non-lethal but vastly more impressive version of Killua's heart grab blitz.
He also just generally causes gusts and gales by punching in a direction.
Edit: Also I forgot to mention this wacky supermanesque sequence, where he kicks off air and before he catches a falling tower, he clears the land, moves animals around, and takes a picture with a fan.
https://imgur.com/a/pqh1NN5
The initial point blank push hit his upper body. The force to destroy multiple skyscrapers hit him dead on. If his eyes were as weak as claimed and somehow with separate durability from his body they would be pulped. Its like trying to come at Superman's eyes.Having someone getting pushed through some buildings and saying "Look his eyeballs didn't explode," is a weird argument to take.
Like if you had him taking a beam to the face or something actually hitting him the eyes, this would feel more believable.
Also, given the speed in question, Killua can actually just bat him around. All Might doesn't weigh more than a regular big dude and start-of-series Killua is capable of shoving 16 ton objects around pretty easily. Killua can just smack him off the ground and keep hitting him and juggling him and stopping him from even getting a ground pound off.
How would batting All-Might around work? Even if he was fast enough to do that, All Might punches straight ahead at full power. If the ground is in front, he causes a massive shockwave and a crater, if not he whips up a wind storm. He just has to keep punching.
16 tons is nothing here. Not when All-Might can do this and survive his power being turned back on him.