So... Cotton/Linen/Wool? The technology is fine, its only downside in most applications is simply cost. Cotton clothes are more comfortable, less stinky, less polluting, and won't fuse with your skin and disfigure you for life if they accidentally catch on fire. On top of not making microplastics soup every wash cycle.

If we cared to actually solve the problem of plastics in fast fashion we could ban them, with some exceptions for sportswear and shoes where synthetics have some actually useful uses. Hell, we could even make it an easy transition by gradually pulling back the allowable synthetic content for x years.

But it would directly kneecap Shein and H&M's business model so we have to weigh all the pros against that.

Yes, this is how I understand it too, it's not like half of your shirt ends up in the ocean (and the amount of plastics that ends up in the landfills isn't really included in the microplastics that circle around - that's a problem for the future - so the vomit-inducing fast fashion/consumerism is a bigger problem from every other standpoint).

And yes again on the only viable solution - it's stupid to try to slightly improve something you are gonna be producing more of every year. The "improvements" are just propaganda we are (successfully) fed for decades & it just muddies the discussions whilst keeping the current/same profiteers in power (without even changing the business model).