Please be careful when copying anything that could be considered your employer’s intellectual property (almost certainly anything you built as an employee falls into this category) off of that employer’s systems.
And definitely be even more careful about using one employer’s IP for a new employer (neither company would be pleased to discover this).
The unfortunate reality is that a significant proportion of software engineers (and other IT folks) are either laissez-faire “libertarians” who are ideologically opposed to the restrictions in the GPL, or “apolitical” tech-bros who are mostly just interested in their six figure paychecks and fancy toys.
To these folks, the MIT/BSD licenses have fewer restrictions, and are therefore more free, and are therefore more better.