I don't follow her logic. Why would that make it meaningless?
Training with a heavy sword doesn't actually work. You're not going to become faster. People have done tests on that.
Attacking someone without a weapon, for sparring? Though with her technique, she needs all the advantage she can get.
Reach isn't the sole deciding factor, but it is the most significant one by far. It takes a notable skill difference to overcome that. It's one of the main reasons spears have historically dominated wars throughout history up until guns took over that role.
Seems like Maplhas or more likely the fatty kiddo used Maplhas spying ability to look into MCs abilities and weakness.
Maplhas apparently is quite famous and powerful DEMON and specialist in spying and tactics, but still quite strong too. No match for MC I'm sure. Plot armor is strongest everywhere but I still quite intrigued on how this set up will play off
Remember, kids, a spear has more length than a sword. If you run straight toward its wielder, of course, its sharp tip could stab you way faster than your own sword's sharp side slashing its wielder.