Considering that Paul is literally every single competitive player, I don't think so. I actually thought that Paul was a really bad guy during my childhood, when DP first aired, but now, I've come to the conclusion that he's just misunderstood and complex, which is what makes him such a great character, the likes of whom we haven't seen since DP ended and the character development went downhill (but I digress). Had they not had him grow as a character, then, yes, it would be bad, but considering that he really seems to have grown to work side-by-side (maybe even love) his Pokemon by the end, and that love is reciprocated, I think that it's actually showing a good message of open-mindedness and compassion (since, naturally, compassionate Satoshi beats him and proves that compassion and kindness ultimately always wins).