The steering on the Ford Model T is very direct and lively by today’s standards. It is a direct ratio of the sun/planet gears in the steering column below the steering wheel.
Direct steering is common with most cars of this age. The Ford, with a transverse front spring, is subject to “twitching” over lumps and bumps in the road. As the front wheel hits an obstruction it causes the front axle to move sideways on its shackles, “twitching” the steering. You can fight the steering every time it jumps, holding the wheel with a vice like grip in which case you will have arm ache after a twenty minute drive, or you can relax your grip and let the steering wheel twitch rather than the road wheels.
It goes without saying that there should be no slack or play in the steering linkage. The camber, caster and toe-in of the front axle should be checked carefully for correct steering geometry.