Often, the replacement will just be a derivative that isn’t necessarily better. The narrative that will then go out through the media is: “We’re no longer using this evil thing. Full stop.” The replacement ends up just being something similar with similar problems. People stop paying attention because they assume the problem is solved, when it really isn’t.

Example: there was that whole BPA plastic stink years back, now most bottles and food containers are “BPA Free”…but if you look into the chemical they used to replace BPA, it has the same synthetic estrogen problem BPA did. (Arbitrarily searched source: https://www.plasticstoday.com/study-says-bpa-free-plastics-still-show-estrogenic-activity )

In the case of replacement for water bottle or food container plastics, the best answer is to just not using them anymore, although glass and metal have their own difficulties, namely fragility and weight.