There is no need to trial it when bans on plastic bags have been implemented successfully all across Europe and people get by fine. Yes, it’s even been brought into law by governments that aren’t leftist (like the UK Conservative party) and no, people aren’t dying of all the germs apparently festering in these reusable bags.
I think many Jewish people refuse to make changes to help the environment because, (possibly subconsciously) we’re tuned to not worry about tomorrow because Moshiach is coming today.