This is known. The number I have heard floated around is 45%. So, commercial fishing nets are a big problem when it comes to plastic in the oceans. And here we are "saving the planet", by reducing the plastic straw consumption: https://www.usatoday.com/story/news/2018/07/18/anti-straw-mo... https://www.bloomberg.com/opinion/articles/2018-06-07/plasti... https://www.nytimes.com/2018/07/19/business/plastic-straws-b...…
And here you are creating a straw man argument. Reducing straws won’t “save the planet” on its own. We will improve the planet by doing multiple things. Reducing plastic use (less packaging, fewer straws, reusable shopping bags) all play a role in a much bigger effort.
if everyone stops using plastic straws tomorrow it will not matter and will not make an impact on how much plastic keeps accumulating.
here are a few more ideas for helping the planet: have fewer kids - this weird trick works, learn to love GMOs - this is the future, there is no way we can sustain the population growth we are experience with everyone eating organic, drive your car into the ground or until it's too expensive to repair it.