We can't necessarily survive that well when under acceleration greater than 9.81 metres per second per second for extended periods of time.
Increasing the acceleration a little bit more than that (eg to 1%) would make a difference.
Wouldn't that be only a few months on a decades-long journey at 1.01G vs 1G??
If the acceleration was too great but survivable, what happens? I can’t imagine my back, knees or ankles would like it.