No, it's not. Busterpilot's answer is correct but incomplete.
Wheel speed is one of the logic conditions for GND SPLRS extension.
Inhibition is also keyed to wheel speed: you have inhibition between lift off and return of wheel speed below 23 kts or touchdown.
(touchdown condition= wheel speed>72 kts OR both MLG compressed and RA<6ft).
Proximity Detectors on Shock absorbers (I guess what you referred as "squat switch") will deliver the compression condition to the LGCIUs, so they have an important role.
(Ref: FCOM 1.27.10 p 12/13 and AMM 27.90.00 p26).
That said, Airbus recently modified the ground spoiler logic (new SEC standard 120 to cope with inappropriate TL position during flare...), but as far as I remember the wheel speed logic remained unchanged.