There are many ways to reuse waste plastics.
Being able to use them to remanufacture the same product as original is not always possible.
There is most often a repurposing into a different plastic product and use.
There is a cost in energy to collect plastic waste. There is a cost in energy and additional raw materials in creating the new products. There may be a lesser impact from the second life. Would one want the total cost to the environment to be a net gain compared to not having the original plastic?
Ultimately how the recycled product is used can risk adding more micro plastics to the environment. To be environmentally sound the use of plastics requires a zero loss outcome. Is it acceptable if their use relies on an ongoing supply of new plastic?
Greenwashing if the focus on recycling is used to draw attention away from the root cause.
IE Recycling is better than not. Not creating the original source plastic is the ultimate solution.
Is it honest to suggest plastics will ever be sustainable?