1) Title. Disabling scrap loot does the opposite of what it claims to.
2) I suspect that line 11 and 18 in data.lua are supposed to be different from each other.
Last one is not a bug but more of a feedback - I'm a bit unsure about their resistance to fire being that low.
Flamethrower turrets already dominate the defenses on both nauvis and gleba, on fulgora they also have the benefit of fuel being infinite and readily available anywhere you want, meaning that even the logistic challenge is non-existent.
Walking pieces of metal sound like the perfect enemy to finally not care about them(demolishers don't require static defenses so irrelevant here). In practice, it seems to be... the opposite? Because they stop moving when attacking, flamethrower turrets sound even more broken than usual. I haven't played with this mod long enough to confirm my suspicions so maybe I'm totally off, but if not - I think it would be nice to at least make an option to change this. And then the already existing setting to configure their damage could easily be tweaked to adjust their difficulty if this makes them too hard to deal with.