As you said, there are many that don’t use those keywords… and oh my, strangely enough - a whole load that do…
I’d sit here and name those that don’t use one of those two as keywords, but the list would be interminable. In fact, C would be on that list (it doesn’t use “private”).
Admittedly they are important languages. But still, its just a small selection. Hardly a “whole load”.
This isn’t a matter of being “pedantic”. The fact is that looking at a name like that, I expect a website about programming in one of those languages. I would not expect to find stuff there of any relevence to programming in general, because “void” is not a general programming concept. Its a syntactic hack C used to avoid requiring separate keywords around suprogram definitions, as most other procedural languages do.
Perhaps your universe is contrained to those four languages and the name just sounds OO-ey to you. That’s fine. However, I think that how the name strikes everyone, not just you, is a relevant issue.