That was true in early YF-16 development - but not in the production models
This from ex F-16 Test Pilot Joe Bill Dryden (Code1 Magazine):
As the YF-16 progressed more and more toward an operational configuration, numerous small changes appeared in the stick and armrest/wristrest geometry. The first stick did not move at all, but rather depended strictly on the amount of force you were using to determine the desired pitch or roll rate. It was possible to fly the airplane very well with this fixed stick, but it was decided it would be still better if a small amount of motion was added. The stick still moves only three-sixteenths of an inch aft, three-thirty seconds left and right, and next to nothing forward. Although this is a very small amount, it is sufficient to give you the tactile cue of making an input. It also lets you know when you’re up against the limiter - something that was difficult to do with the old fixed stick.