The common refrain was Cyberpunk studied dark themes like corporate greed, abuse of power, corruption, anti-authoritarianism, and of course there's the violence.
There's dark themes aplenty including abuse of power, corruption, sexual abuse, anti-authoritarianism., and of course the violence.
1) I question use of "anti-authoritarianism" as a "dark theme". Authoritarianism itself is the thing that is dark.
2) "Teen" is a wide range of intellectual and emotional development. What is okay for a 19-year old and a 13-year-old are not the same.
A little?
You are comparing two genres - cyberpunk and teen dystopia - but aren't looking deeply enough at the genres to grasp the differences. Specifically, you are looking at what themes are present, but not at how themes are presented. The details of presentation matter.
First and foremost, teen dystopias are written for teen readers, with teen protagonists. Language use is aimed at younger readers. So foul language, for example, is kept to a minimum, or abstracted into neo-language cognates.
In teen-dystopias, broadly, the dystopia is thematically a stand in for the pressures of society, and adult characters are stand-ins for parents. Teen-dystopias generally end with the teens
WINNING, busting the dystopia the young folks overcome the pressures of society, with only a few thanks to a couple of adults for support, maybe.
Meanwhile, in cyberpunk, the protagonists are generally taking on sysiphean tasks and winning pyrrhic victories, and make little real change on the society around them.
Also, teen dystopias are usually threadbare in plausibility, based on one oversimplified concept. Meanwhile. Cyberpunk typically uses an all-too-plausible corporate money-is-power world.
And so on. There are many more differences that lead to the overall point- you can be hard or soft with these themes.