FIA has apparently been aware of the DAS a long time, this is from the new 2021 technical regulations (edit: which is from october 2019).
So it seems that it would be illegal next year
10.5 Steering
10.5.1 The steering system is the mechanical system, on and part of the sprung mass, that converts
the steering column demand into the outboard suspension position control for the realignment of only the two front wheels (the steered wheels).
10.5.2 The re-alignment of the steered wheels, as defined by the position of the inboard attachment
of the relevant suspensions members that remain a fixed distance from each other, must be
uniquely defined by a monotonic function of the rotational position of a single steering
wheel.
10.5.3 Power assisted steering systems may not be electronically controlled or electrically powered.
No such system may carry out any function other than reduce the physical effort required to
steer the car.
10.5.4 No part of the steering wheel or column, nor any part fitted to them, may be closer to the
driver than a plane formed by the entire rear edge of the steering wheel rim. All parts fixed to
the steering wheel must be fitted in such a way as to minimise the risk of injury in the event
of a driver’s head making contact with any part of the wheel assembly.
10.5.5 The steering wheel, steering column and steering rack assembly must pass an impact test,
details of the test procedure may be found in Article 13.8.