Right.
Because an incomprehensible psychedelic experience followed by a giant baby floating in space just screams that conclusion.
Right.
QED.
Yes it says all it needs to say. It’s an elliptical modernist narrative. If you need to have your hand held then watch the Doris Day/Rock Hudson vehicles. If you want to see what 2001 would be like with more ‘explicit’ storytelling then watch 2010...it ‘explains’ everything. And it’s long been forgotten.