Yeah, don't do it. There are so many stories about people losing their birds this way. If the bird is not used to being outside their first response might be to freak out a bit, and before you can snap your fingers they are too far away to know how to get back. And typically a lot of them are killed in the first few hours. Its classic. It's cliche. There was one youtuber I followed for several years in LA with a female CAG that was so sweet and hand tamed, and the guy obvious loved her so much. He had hundreds of videos with her. He had a big outdoor aviary for her to spend some time in during the day that he built for her on the shaded patio in his back yard, and since she was so calm and bonded to him he would just open the door and go inside to hang with her. But one day she wasn't looking when he opened the door and she got startled for a second, and "voom", up and out of the cage in a panic, never to be seen again, even though he canvased the neighborhood for days. I would also be nervous of hawks for the people that free fly their birds like on the Youtube channel "bird Tricks", but recenlty I realized they also I think have gps trackers on them for the worst case scenario. But even in the best case scenario it isn't something you just try out cold. Those people start out training flight commands in a large screend-in backyard aviary.
My first 15 or 20 years of parrot ownership I was careful, but I don't recall worrying too much. But stories like the one above, and many others, and now I'm a bit paranoid about it. My birds are out most of the day. But when the sliding glass door to the "bird room" is open I make sure the front door is locked. I have vision of a friend opening the door randomly, which in itself might freak out the birds, and one of them shooting out in a panic.