The rules :
1) Style over Substance.
2) Attitude is Everything.
3) Always take it to the Edge.
4) Break the Rules.
Hopefully in a couple years, we don't get flooded with a barrage of games pandering to kiddies who want OMG XTREEEEM BADASS CYBERPUNK STYELZ GAME!!!11, KEWL ROBOT ARMZ!!!1111, each title more and more implausible, milking the genre for all it's worth until it's been bled white and the name "cyberpunk" is ruined for another generation to come.
Cyberpunk has a lot more to offer than merely a visually impressive style. The societal impact of increasingly prevalent and comprehensive man-machine interfacing is worth exploring, and should drive the fundamentals of any Cyberpunk fiction.
Which isn't to say that it is wrong to sometimes relish in the style and superficial trappings associated with the genre. If Cyberpunk 2077 is more style than substance (as devs have suggested), that's okay with me. But if the core of Cyberpunk is buried by a revival of style but not substance, it would be a big loss.
.......
Steampunk these last few years has gained widespread popular status: as far as I can tell it is mostly an aesthetic/historical fantasy, that has little to say about society or history, etc.
Maybe steampunk and cyberpunk are fundamentally different in nature. It is probable that steampunk wa always an aesthetic/fantasy movement first and foremost. Or maybe there is a core group of "steampunkers" out there crying over the ruination of their genre. If that were the case, it'd be quite sad.