Fraud and misrepresentation are always options for contributors, at some point one needs to trust that they’re adhering to the rules that they agreed to adhere to.
What you’re saying is essentially the code equivalent of “I found this image via Google search so of course it’s OK to put into a presentation, it’s on the web so that means I can use it.” This may not be looked at too hard for an investor presentation, but if you’re doing a high profile event like Apple’s WWDC you’ll learn quickly that all assets require clearance and “I found it on the web” won’t cut it—you’ll be made to use a different image or, if you actually present with the unlicensed image, you could be disciplined or outright fired for causing the company liability.
It’s amazing how many people in this industry think it’s OK to just wing this shit and even commit outright fraud just because it’s convenient.
You can talk about how we should act and be all high and mighty all you like, but it’s just burying your head in the sand about the reality of how code is written.
Also, technically, I never said this made it perfectly ok. It’s just that it’s the reality we live in and if we got rid of everyone doing it we’d have to fire 99% of programmers.