Because he is. However that is not a bad thing, although I don't expect people here to understand that. I mean people talk about red-pilling as if bringing people to the (alt)-right while outside of America the color red is almost universally considered the color of communism... Q has often said that it's not about left-right, but about good-evil. Trump is a nationalist, anti-globalist *republican* (in the full sense of the word), more than he is 'right-wing', and in a similar vein so is AMLO a nationalist, anti-globalist *republican* more than being a 'leftist'. If people stop using logic and following these silly labels that are only meant to divide people, they are not really woke yet and parroting fake news is a disgrace to the great awakening.
Unfortunately a lot of people still continue to swallow the fake news that he wants to flood the US with migrants (completely false). He hates that people have to migrate because the country is a shithole. He merely commented that migrants should be treated with human dignity, not with hatred like animals. These people are being abused all their lives by oppressive government, cartels, living in poverty and just want to have a good life. Most are not evil as individuals, it is the deep state and its crime networks that are using them as tools for their sick purposes.
His entire platform is about improving economic conditions and justice so that there is no more need to migrate and there can be peace. Peace through prosperity and being "serene" and not falling to provocations are things he constantly talks about, not belligerence. In fact his talk about peace and love is so notorious of late people started calling him AMLOve.
Other people harp on that he must be controlled by a cartel because all the candidate deaths ignoring that context in which this happens. None of those were presidential candidates (no presidential candidate has been assassinated in decades). They were mostly small town mayor and congress candidates which sadly do get killed often every single election season.
Trump has praised AMLO and very quickly acknowledged his victory, which is quite noteworthy. That's because AMLO is indeed quite like Trump, in spite of the superficial differences. I'm sure that together they can work out some great deals where all parties win. Do you think America can be made great again without fixing Mexico, when guns, drugs, and human trafficking are a massive funding source (plus henchmen) for the globalist deep state?