No, you are failing to comprehend the rule set as it pertains to what constitutes a deliberate or a non-deliberate handball. For the GK to commit a deliberate handball would require him to be well beyond of the boundary and having no plausible deniability to him not knowing precisely where he is. The fact that not only is his body inside the box but the fact that he retreated back into it looking down pitch only furthers the point since from that perspective he wouldn't have even seen the line even in his peripheral vision.
It is VAR that has fenced us all in as it pertains to the situation not being able to be corrected, which was my point all along. Whether it was a denial of a GSO is subjective enough, then whether it would be considered a deliberate handball. Those are two levels of red tape "blocking" the correction of the incident. And I didn't hear anyone whilst making their arguments for a red card mention the term "deliberate" in their describing the handball. Only to then lecture me on the rule.
So I'm afraid you're the one fenced in here by the fact that the handball, regardless of whether it denied a GSO or not, is quite surely non-deliberate due to its proximity to the edge of the box. Which is precisely why I deemed a red card there to be "harsh" which was met with considerable resistance, from the ignorant, from those that didn't do the calculus on it needing to be "deliberate" in order to rise to the level of a red card, even if it was in fact a denial of a GSO. And further, both the retreating of the GK to get back into the box and the proximity of the handball itself to the box speak directly to it being inherently non-deliberate since it was the keeper. We can keep going on and on all you like, but I would advise you to concede the point seeing that now it is very clear where we stand on the issue.