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Most of his schemes were good. What he screwed up was neglecting quality of his army's Pokemon, and eventually also his own in BW2. Not necessarily all the love bullshit, just making sure they can actually fight on even terms with competent trainers, something a paramilitary group would need to eventually do. They have too little variety in Pokemon and types, allowing a few good Fighting types to waltz over majority of his forces, which is probably how player characters managed to beat them both times simply by befriending Muskedeer trio.
TL;DR even someone who sees Pokemon as tools/weapons should know that good tools/weapons are necessary to get the job done.