The Alamo Myth is pretty much just that, a myth. The defenders should have retreated, but instead chose to make a suicidal stand with no hope of surviving. Were they great/good people? Probably some were, but many were not based on today's standards, but revisionist history often tries to frame the past based on today's standards which don't apply to understanding history. One thing I've read in various places that among the Texan rebels were people of Mexican descent, including among the defenders of the Alamo.
