I thought so as well. Really lazy writing, same with the nanomachines....err I mean parasites.Also, MGSV is basically kinda like the S3 plan from MGS2, the Solid Snake Selection one, lol
They took a close friend of the boss, a guy that didn't have that much in the way combat skills and gave him Boss experiences and identity and made him into Big Boss kinda like how they made Raiden into Solid Snake, lol.