The plastics industry has been accused of using the same rationale that has been the mantra of the NRA. Their version would be “Plastic bags don’t choke marine animals, people choke marine animals.”
They cite sources. A couple of the links they provide direct back to a very general EPA page about municipal waste.
The fact that none of the facts say anything about plastic says something about plastic.
It entertained me for a moment to imagine a bunch of plastics industry executives doing a careful survey of all the litter in the English-speaking world (I hope the picked most of it up while they were at it). I am not living in the English-speaking world right now, so I can’t counter their fact with a random survey.