I'm really curious if it would be possible for Youtube / Google etc. to expose their algorithmic interface to their public users so that they could twiddle with

I'm really curious if it would be possible for Youtube / Google etc. to expose their algorithmic interface to their public users so that they could twiddle with the settings themselves - or is that just technologically impossible given the internal structure of their systems? I really have no idea, but I've been wondering about it for some time.