Fair enough, but that isn’t definitional of a server. Words mean things. “Ultimate stability” isn’t part of the definition of a server, nor is “total control.”
And I’d wager that there are limits to your perceived need for control, too. After all, you aren’t running a server you wrote yourself in machine language on bare metal. You aren’t running Linux from Scratch. You aren’t even running basic CentOS/Rocky/Debian. With NS7, you’re running something built on top of CentOS 7 which makes configuration a lot easier (for the things it’s designed to handle), but does so by greatly limiting your control of it (and those two are almost always in opposition to each other).
NS8 isn’t fundamentally different in this regard. Yes, it’s different in terms of how it does it, but you still give up control to get ease of use.
…and particularly when your concern is based on nothing more than “potential.”