I am responding in order:
my point isnt about that it could be finite. When i am saying squared, im reffering to an infinity being multiplied by itself.
i am not talking about his speed without the hax. Its his overall power level to be able to teleport then subsequently hold infinity multiplied by itself; holding back the resulting explosion of energy of serious punch squared suspended above earth. It implies that blast is strong enough to hold back saitama's full power at that moment, multiplied by itself.
The implication of speed came from the idea that to survive an attack with infinite power, you require infinite durability. And seeing as how garou can copy and did just that, why not infinite speed? He needs to dodge attacks with infinity behind them after all. So why does this imply that blast can scale? Because without invalidating every detail by claiming its a gag while suspiciously validating one singular detail to fit your interpretation, a saitama who is trying to stop garou in a life or death situation (for everyone else) even with 'normal' attacks is portrayed to be exerting more effort than what you claim to be an infinite level knock. Normal punches that garou copied and all the implications that came with it, and whom which blast scales to because he fought him.
No need to comment on the last one.
(There is so many evidence that either goes against your interpretation or supports mine at the same time already: blast scaling issue + ff and sonic scaling issue, seeing as how they are not immobile in the face of a MOVING 'not trying' void who apparently moves at infinite speed, implying they move at a finite number below infinite, which starts off at universal. They now feasiably scale to an unknown MFTL amount that is a percentage of infinity + no feat of actual infinite level power without dimensional manipulation as examples + portrayal of the knock being effortless + the concept of saitama attacking garou with normal punches in a life or death situation should be him logically putting more effort + saitama's exponential growth adding strength + the fight with garou where saitama grows while the latter copies, portraying them to be performing higher and higher feats of strength, that not once showed 1% of infinity, so based on your interpretation aren't actually showcasing anything meaningful. Just a meaningless series of events showing infinitely weaker feats of strength + consistent portrayal of saitama's strength to be below infinity + no correlation of the increase of strength to the ability to manipulate higher dimensions + other already established explanation that allows dimensional manipulation that could be similar to blast/void abilities + and most importantly, saitama shown to control his matter at a molecular level and go outside the flow of time, a feat outside the realm of muscle power physics, showcasing the capability for esoteric ability. Are you telling me that in the face of all this, your theory is the one that is most likely???)