Does worrying help at all?

I already cut the worst culprits out of my life (car, eating fish, synthetic clothes, one-use plastics), but I still get blasted with the stuff just from walking around town.

Cars?

Google searches

https://theconversation.com/car-tyres-shed-a-quarter-of-all-microplastics-in-the-environment-urgent-action-is-needed-244132

Oh

Well that's no good. Will probably get worse with EVs, too, since they're heavier. I imagine any rubber would do this, right? Car tires, shoes... Time to go barefoot, I guess

EVs are less bad cause they use their brakes much less since they can use the engine and battery to brake.

Do you have a source? From what I understand EVs wearing through tires faster is common knowledge

https://www.michelinman.com/auto/auto-tips-and-advice/electric-mobility-guide/how-to-reduce-tire-wear

No, I don't. I misremembered. EVs emit less brake dust than ICE cars, but the increased tire wear makes up for it.
On the other hand, just buy a lighter EV ;)

Lighter ev is hard since the weight comes from the battery packs. We're certainly working on it, though

Most people don't need massive cars, so there is a dual issue here. USians can't keep buying bigger and bigger cars forever.

It's not like your options are "car A" or "car A but with a battery".
The most sold vehicle in the US (Ford F-150) weighs the same as most EVs.
The EV I'd buy if I couldn't live without car (Dacia Spring) weighs half as much.
The vehicle class makes more difference than the drivetrain.

Actual latex rubber, which tires used to be made from, is biodegradable.