Can you be too fat to be a lineman

Yes, you must be very physically fit in order to be a lineman.

What is the weight limit to be a lineman in 2021?

Officially there is no weight limit to overhead lineman jobs. However, many job descriptions will require the person to be physically fit. Check out jobs for larger lineman here.

Can larger lineman climb poles?

While it isn't easy, larger lineman can still learn to climb wooden utility poles.