I would like to comment that the deep or the darkness is a tangible force in the universe as Oryx states he will study all the worlds destroyed by the deep and that he once witnessed it destroy a fortress world. Also the grimoire majestic majestic is entirely a speech made by the darkness. Also it is not stated that hive fought the elinski and from HOW grimoire BoS there is no evidence that the fallen and give teamed up. Also it is also known by warlock 2 that crota arrived at the moon sometime after the collapse since he fought guardians and it was the first time guardians fought him. Evidence points that it was the darkness who crippled the traveler since Rasputin was easily overwhelmed during that time.