Because i use a BT keyboard while running TSW4 on my PS5, i really do need to be able to put more on that keyboard where i need it due to my Parkinsonism. Keyboard with PS5 is a real thing. I also use a wired USB C mouse with this PS5, even though others would not. The keyboard is BlueTooth, but i most ften have it on a USB C cable unless the train requires me to use Q key or has other troubles. So imagine how i feel about SkyHook never having really fixed the BR 187 for which lowerng the AFB with the F key is effectively fatal at zero ... you seem to be alive, but you will move no more. Even using a trick to release the brakes, the power will show real kN applied using real kV but you get zero kph.
While I don't have a PS__ and rarely play on my XB1X, yes I agree both console versions should have much more keyboard and mouse support.
You could try two Access Controllers with the Logotech Addon Buttons. Can also be combined with a normal controller (helping hand) and keyboard.