First of all, calling Archon heroes is deeply questionable, though we can't really get into that without breaking the forum rules. Suffice it to say that this comic isn't really interested in exploring the moral implications of superpowers.
Second of all, neither being on the side of the heroes nor doing good deeds is enough to prevent one from being a villain. You have to also not do anything bad to avoid that label, and Dabbler is in this comic doing something very bad indeed.
And while Dabbler obviously is under no obligation to comply with my or anyone else's sense of morality, that doesn't mean we can't use our own sense of morality to judge her behavior.
The fact that a species inherently has an ability does not mean they get a free pass for using it, or for thinking it's ok to use it. All humans by default have the ability to strangle other humans, but that doesn't mean we're ok with people using that ability.