Otherwise where does it end? What other things should I assume are dangerous despite no evidence? Or are you saying I should latch on to whatever baseless hysteria is popular at the moment?
I'm not a betting man. I think plastics have been around for a long time and as far as I know we haven't proven that they have a negative effect. If they did have a significant negative effect I'm pretty sure we would have proven it by now. So maybe they have an insignificant negative effect. I'm okay with that risk. If I weren't I wouldn't have time to do anything other than worry about and avoid shit that might have an insignificant negative effect - not to mention things that we know have a significant negative effect such as alcohol.
Honestly if you drink alcohol and you worry about microplastics you're just hypocritical.