This isn't even close to true. VCs aren't silly, and it's not the 2010-2015 days of free money any more. Having a big company on your resume is not enough to land your seed round. You need a product, traction, and real money revenue in most cases.
I mean, even if that's the case Facebook was hiring 100 Million$ just a few months ago though even poaching from OpenAI and I do think that these employees will always have an easier time getting a decent job offer from major companies in general as well. They may or may not be making the same money but, I do think that their morals have to be priced in as well.
Oh no, principles with a price... what will they think of next. Obviously principles only matter when there is a price attached.