Advocates could chart the eventual gains, improvements.

I understand there are costs involved. I'm ok with switchover costs, 1 step back before 2 steps forward.

The future of lithium ion batteries are a great example. Eventually, most material will be recycled, cell production will be carbon neutral, most conflict materials (akin to "blood diamond") will be phased out. I'm ok with temporary negative externalities to get us to that rosy future,