You are correct. However, I was thinking the Aztecs would have lost their Gulf coast as their tributary people became allied with Spain. The Totonacs and Tlaxcalans would likely cut them off from the coast. This is supposition of course. The Pacific Coast would still be part of the Aztecs, but it will take a very long time before any European power makes contact with them through there. Epidemic disease would likely cause their societal collapse before that happens.
You are correct. However, I was thinking the Aztecs would have lost their Gulf coast as their tributary people became allied with Spain. The Totonacs and Tlaxcalans would likely cut them off from the coast. This is supposition of course.