If you are asking- "do I have to have arms like popeye to use a
coldsaw?"
the answer is no.
They are so massive because rigidity is the key to accuracy in any
machine tool. Vibration, and chatter, are always your enemy.
A decent horizontal mill can easily weigh in at 10,000lbs.

So the massive aspect makes for precise, clean cuts.

But as far as blade pressure- yeah, you pull down on the handle, but
not with any extraordinary force. What cuts the steel is the incredible
torque of a 3hp motor geared down to 45rpm.