It’s apparent that you didn’t understand what that meant. I used the standard called “infA” to signify what all other powers of infinity are going to mean. And one infinitesimal, raised to no power, is merely 1/infA. His standard was called “st(.)” which refers to what one infinitesimal (not raised to any power) is to mean.
Regardless of the notation standard, any single first order infinitesimal (being not raised to any power) ignores all of the higher powers, thus “rounds off” any of those left over if you are using them. It is no different than rounding off anything below 0.00001, except infinitely smaller.
In my explanation, I first went through a derivation using merely Georg Cantor’s infinity-squared real numbers, from one first order infinitesimal up to infinity (“infA^2”). But that leaves room for speculation below one infinitesimal, so I continued. The second portion explains the proof in terms of the absolute highest and lowest possible numbers so as to prove that there can be no homogeneous state because it requires numbers less than absolute lowest possible, aka “impossible”. That is how you get to “absolutely no possibility”, not merely an infinitesimal possibility.