That depends. Median usage of languages over the population of devs shows that they prefer 0-based indexing. Median usage of languages across the entire population shows that they prefer 1-based indexing (Excel has more users than all other languages combined, and is a 1-based programming language).

As far as human programming languages as a population, they may tend toward 0-based because they are written by devs, who prefer 0-based. But if we're talking about aliens, are we sure that alien devs would be the ones writing programming languages? What if all aliens could code? What if their languages are expressive enough that any alien could make their own language to suit their personal preference. It's really hard to say anything here without specifying anything about the hypothetical alien species and their culture.