The issues go much deeper than 'they are seen as ugly,' especially when we look at wealth division, economic distribution across regions, lackings of autonomy, percentages of prison populace, etc... If one took the example of how we determine the legacy of colonialism in the US or Brazil and apply it to Mexico, we find the same examples, except in the case of Mexico, there is a veneer/deception of racial ambiguity. As we know too, regarding these Mexican founders, these were all Criollo who created a country in their own image and subsequent Mexican authorities violently opposed the autonomy of Indigenous regions such as Yucatan and other like situations wherein the central government of Mexico was ascendant. Do not be so revisionist to revise the history as Mexico being a country founded upon racial equity against Spanish colonialism. When in actuality, the realities of colonialism did not end or cease after the Mexican independence.
Regarding recent trends, these are via the actions and struggle of those who are oppressed and pushed to erasure by the Mexican society. It is not the action of the ruling class or those who benefit from the legacies of colonialism. It is akin to saying that the Boers are the authors of the system that ushered in the republic of South Africa. We know that progress is occurring, but to those who are at the margins, progress is never fast enough.