I was confused about why so many people were talking about Magic the Gathering, and why no post made sense (I haven't played in 30 years, but I still know what it is about).
Then, I realized that MTG doesn't mean "Magic the Gathering" anymore.
People need to quit their addiction to acronyms as well as their US-defaultism and need to relearn how to use hashtags. (and I have one more keyword to mute)
@DavidBHimself thankfully with that politician quitting the #mtg hashtag can be reclaimed by #magicthegathering players, though your point stands as the initalism keeps the game obscure to outsiders.