I do provide cross-clone compatibility notes and plug by name “competing” companies and games and publications within my game. Even if someone unfamiliar with anything decides my game looks cool and picks it up at random, they will know that my game is but the latest that celebrates a greater tradition, and they’ll know there are other visions than mine that are producing great things. If I manage to reach new people I hope those people enjoy all of our work, not just mine.
The really sad thing is that there most likely won’t be a single mention of the name Dungeons & Dragons. For legal reasons, whether real or perceived, the original game itself won’t get a mention by name. Unless James chooses to really stick his neck out even farther than he has already.