Or legally burn it

https://en.m.wikipedia.org/wiki/SELCHP

I actually wonder if incineration is the best way to dispose of plastic as it avoids the recycling fraud problem

Generally we try to minimise our plastic use but it’s hard

Well you can't minimise plastic use if the rest of society doesn't.

I think landfilling is fine, we just need to make sure it does not end up in the environment floating about and causing contamination. And that we are not getting defrauded.