I'd say set them free. But given the breeding of commercial chickens they'd simply not survive in the wild - not stop growing and after just days be unable to move, and easy prey. If you're fortunate enough to have land, use it, even a balcony or window sill can be put to good use. There are plenty of guides on YouTube, and for a window sill no need to spend money on herbs again. For food or for leisure (or both) - i…
Releasing them would be dooming them to a horrible death. They'd end up ripped apart by wild animals or otherwise injured and live in pain until they die.
You're correct, I put them in their chicken-wire yard at night for good reason. A neighbour has geese. Geese get freaked out very easily. If a stray dog comes by at 3am the entire street knows about it.
I'm not from the farm. Interesting thing to learn is to let an egg rest a couple of days, no washing no refrigeration of course. Surprised me, wonderful variation in taste.