Can Copilot prove that and link to the source LGPL code whenever it reproduces more than half a line of code from such a source?
Because without that clear attribution trail, nobody in their right mind would contaminate their codebase with possibly stolen code. Hell, some bad actor might purposefully publish a proprietary base full of stolen LGPL code, and run scanners on other products until they get a Copilot "bite". When that happens and you get sued, good luck finding the original open source code both you and your aggressor derive from.