Maybe you know this already, but be aware that, and this is the case with many languages, it's one thing to learn C++ the language but it's another to produce something working. Python you just write the code and it goes. In something like C++ you have to learn about the compiler, external libraries, OS-specific details as well as the language itself. I've always personally found it a little daunting.

Regarding the design, it looks fine to me.

Regarding submissions, if they're about programming / software development, let them be. In a free-speech zone (the whole point of Voat!), there's no room for "there's too much of this" or "I'm tired of seeing that" when it comes to the overseeing of content. I've seen people on reddit's r/programming, for example, exclaim that they're tired of seeing so much Java stuff. That kind of opinion is out of bounds when it comes to on-topic neutrality.

Topics rise and fall in popularity. That's reality, not any kind of unraveling of community fabric. If it's on-topic, let it flow and let the voats do the judging.