>>280659901
That's not a change, it's an error in the webcomic translation that didn't make any sense since the whole joke is that Saitama isn't paying attention in the slightest because of how bothered he is by Sweet Mask ordering for him (deservedly). We can't be certain if Saitama actually knew all this because he can be seriously ignorant at times.
In actuality, Murata uses the exact same dialogue as ONE did here.