It already was in early access on console before. It´s on gamepass already. Those can´t be the reasons.
This is what they say on their homepage:
"Our team feels satisfied with our efforts, especially with the significant overall progress, art quality and optimizations that have gone into the current release slated for all PC and Consoles and are ready for launch"
Why would they simply lie? Or not tell that it has to do with consoles? I mean why would you ask for new trouble and not tell that they are basically forced to do it, and then do it in a way that looks like you deceided on your own and you very well know that it won´t be satisfying for a lot of people when you can simply tell it´s due to 3rd parties that you must do it?
Do they need a reason to slow down development so they can free up work force for their next title? Are there investors in sight that maybe don´t wanna invest in a company with 3 not finished products?