I have no problem with the videos, it is good information for people who are not armed. And I saw no where in the videos where anti 2A statements or suggestions were made. I doubt you will see very many LEA agencies telling us to arm ourselves to stop active shooter situations, as long as they don't tell us not to.
And let's be honest, bringing a handgun to a rifle fight is not a winning combination. That has been seen many times but one of the most famous is the Miami shootout. If I could find cover and get away that would be my first inclination, rather than shoot it out when clearly outgunned. Unless of course we are going to advocate the carry of LG for self defense. And that is mostly taboo.