Yeah, when the show came out it was very well regarded as being pretty accurate.
Obviously it's a TV show, but most of the hacks were real or based on real hacks and techniques. From what I recall most of the hacks were social engineering (dropping the USB drives trying to get someone to plug them in, using physical access to install a raspberry-pi on the network, etc.).
Realistically, I think that raspberry-pi would be found pretty quickly today. And those USB sticks would probably now trigger a visit from IT (everything you do on your corporate computer is logged. If you plug in a USB stick your admins can/will know about it, I had a friend who's employer threatened to sue them because they downloaded personal documents off their computer using a USB, and the employer threatened to sue them over stealing trade secrets, which sounds dumb, but it was basically blackmail to try and stop him from getting another job).
But he was quitting. They sure hassled him though.