That’s like saying Sweet 16’s are a fad and no one will celebrate 16th birthdays lol. Also, wedding ceremonies, only a fad? Nope, wedding ceremonies every year, new clients(usually, sometimes twice, thrice and more).
Can’t stress it enough, board games design has to be understood similar to that of fashion industry. The fashion changes over time but is ALWAYS in style, if unicorns is the topic and considered a “fad” then perhaps more would agree but to say board game cafe is a fad is extreme, like saying fashion is a fad. Simply not the case. Even in death, the ancients were fashionably wrapped.