I do not know what is wrong with software engineers. This is theft (or whatever the lawyers says in the IP law) and now stating: Ooops we did not know, our bad, we keep it till we have found a replacement. Mistakes happen also in real life, but libraries is a common thing, like cars standing on a street. You do not accidently steal a car.

Software Engineering is more than coding. Basic license management incl. library vetting is part of it. If you decide to ignore that, you do not run a business enterprise, you run a criminal enterprise.