I get the problem with how it's being labelled and why it's (at best) a gradation between bad and worse. I also know that some significant fraction of people will only be swayed by economic arguments. So, if it's not energy-positive (or even just break-even), it's likely dead in the water.

All that said, if it did work, it might be interesting if we started converting plastic into energy that had to be used to scrub carbon from the atmosphere and sequester it in a way that doesn't tend to produce microplastics. That would require improved tech and a functional regulatory system, but, let's dream for a while.