I hardly think anyone in a contemporary home grown militia actually rests their raison d'etre on the effectiveness of the Revolutionary era militias. It doesn't matter how effective on the battlefield the Revolutionary militias were unless you are a history major writing a paper or historical inaccuracies spin you up.
I don't think you are paying enough attention then, especially to how central the mythology of how we gained our independence because of the militia is to the modern 'militia' members movement. So yeah, understanding that and how it is a factor in not only the modern militia movement but also things like gun control are pretty important to more than just a few history majors nerding out over some historical minutiae.