You're arguing that MA should be what you prefer them to be. That's not my preference, though, so why should they be that way?A better tool to destroy enemies. That's putting it mildly. In a sports sense, it's more about which combat system will give you the most wins in sanctioned competitions. Perhaps it is a relic of the past, but back in the days, just like how lifters and bodybuilders preached about their super amazing training systems, martial artists who competed in combat sports represented their schools. American Top Team, Miletich Camp, Shoot fighting, Gracie Jiu Jitsu, you name it. At the end of the day, nobody cares what religion your combat system follows. It's just another sport, and the only thing that matters is the last man standing. The winner.
Martial arts are exactly that. Martial. That's all they are. If someone wanted to pursue spirituality, there are better avenues for that.