Ruin Explorer
Legend
I think when you define D&D this way, which is fine, then sure the answer is "yes".For that reason, I think it's helpful to consider (5), The Greater D&D Universe, when discussing "D&D."
But if you define D&D as "WotC D&D", then the answer is much less clear, I'd suggest. Indeed one could make a reasonable case that it wasn't consistently true.
I think this is a major issue.I'd be more pragmatic about D&D being the 800lb Owlbear in the room if it was capable of delivering a fuller, richer experience than what has become D&D-fantasy. If there's going to be one game that in-the-darkness-binds-them, it would need to be a more complete (complete, not complicated) rule set with either better settings or better world-building tools.
I'm ambivalent at best about D&D. Sure, it's the hook and line but these days I think it's also the sinker.
On of the big problems with D&D (and this does apply to PF2 etc.) is that it's complex and clunky, and really a bit old-fashioned in a not a very good way. I'm not sure it remains as a particularly great introduction to RPGs,