The inkblot idea is to hopefully make you see that a poem is not an inkblot. There was intentionality involved in its creation which you seem to be ignoring.
Even if we were to grant that you had some great insider information as to what the author intended (which I highly doubt) the artist's intention is in no way relevant to the audience's interpretation... or rather it is in no way excludes alternative interpretations as a work of art.
My claim is that you are being played like voters are occasionally played in some political speeches. If that doesn't bother you, then fine. I would have thought that it would have bothered you.
In other words, you are claiming that those of use who actually appreciate Neruda's poetry and don't find your claims of his narcissistic agenda particularly useful or relevant are akin to the fools in the "Emperor's New Clothes"... seduced by some cult of hero worship. Again, this is a tired cliche repeatedly employed by those who dislike a given body of art... but find that there are many others who find the same work to be of great merit... personal likes being assumed as the same as fact ("I don't like X thus X is bad and all those who do like X are simply fooling themselves.")
I all honesty, I'm not overly seduced by the cult of personality. I'm not overly fond of James Joyce... but I recognize that enough insightful readers and subsequent writers of real merit recognize his "genius" so that I must accept that his work simply doesn't speak to me.
On the other hand, I find a good deal of Neruda's extreme Leftist/Stalinist political views repugnant... to the point that I don't really look to him as an individual worthy of great adoration... but my admiration of his poetry is based upon what I read in his work and what I have read by other poets... including a good many "Modernist" poets.