Sony's excuse is bullshit. If they really were convinced these were counterfeit 3rd party controllers, they should've popped up an on-screen message "defective counterfeit controller detected, please only use properly supported hardware". That would've made the error clear. But random disconnects are just sabotage.
Microsoft did it even worse by not allowing any third-party controllers to even connect to the Xbox one (series S/X) via wireless or even a USB port, via a controller firmware update.