Repeated cultivation is the only offered non-chemical option for scutch[0] but it is an option, yes [edit:at scale] burning fuel.
My first offered technique was occultation not crimpers. That of course won't work in all circumstances. Often you have to use multiple techniques and really stay on top of the persistent ones. Automation can do that but then there is the pricing issue.
As noted by others you seem quite knowledgeable for someone not in the field but also wrote confident that you have the answers.
Occultation, as you mentioned, is only really feasible on very small areas. Market gardens, that sort of thing. I'm assuming plastic sheeting
I have found it rather disappointing in practice, in my experiments. It needs to stay down for a very long time to kill bindweed, for instance. You would think a month would do it, but it won't. :(
Yes, silage tarps specifically. White on one side black on the other. You can get very large rolls but then laying them out and keeping them from blowing away gets unweildy. Use is sensitive to temperature and other time of year matters but is always dependent on patience. My only experience with bindweed is low scale but you can surely look it up on hortsense.
My first offered technique was occultation not crimpers. That of course won't work in all circumstances. Often you have to use multiple techniques and really stay on top of the persistent ones. Automation can do that but then there is the pricing issue.
As noted by others you seem quite knowledgeable for someone not in the field but also wrote confident that you have the answers.
[0] https://hortsense.cahnrs.wsu.edu/fact-sheet/weeds-quackgrass...