"The pen is mightier than the keyboard." In this case, you're right. But I have a question.
Do you believe the pen is mightier than the sword too? The person who coined the quote "The pen is mightier than the sword" is Edward Bulwer-Lytton, who wrote it in 1839. He was a writer and a politician, who never served in the military or worked in the medical field. Maybe if he had served in the military or worked in the medical field and treated someone whose limb had been sliced off by a sword, he never would have claimed "The pen is mightier than the sword". The big problem with that quote is that is grossly exaggerates the power of words and it trivializes violence. Violence isn't a joke, it's a scary, destructive, horrifying, and sadly, sometimes necessary action.
Even if the pen were actually mightier than the sword, think about this-There are many other weapons that are much more powerful than swords. Would you try to convince people that pens are mightier than catapults? Bows and arrows? Tasers? Handguns? Rifles? Cannons? Laser weapons? Grenades? Rocket launchers? Attack helicopters? Fighter jets? Nuclear bombs?