Hypertrophy does not necessarily mean all puffy and beefcakey. Hypertrophy simply means muscle growth and is the opposite of atrophy. "Hyper" in this case doesn't mean "too much."
Most of us need to gain some muscle because our daily lives render us physically weak in comparison to the model human. I was thinking about this the other day while watching a video about chimps. Even through their fur you can clearly see their musculature. Chimps are ripped. They swing through trees and climb and stuff all day. What do we do? We sit, mostly.
You lousy kids! Get off my savannah!