Highly doubtful. With an IQ that low they wouldn't even be able to load a clip. This leftist twit probably made this up out of no where like they do with almost all their "statistics."
I've known a number of Marines in my time, and I'd guess that the average IQ of the ones I knew was 105 or better. I've know a number of Marines with superior intelligence. I'm not talking about officers either, I'm talking your average Marine.