No mate, doesn't work well. I have one and if you stick to normal FOV, then there are no benefits to the widescreen (you would see an enemy at the same time others would on smaller monitors). If you turn FOV up, then it massively distorts images and messes with the distances. Things front and centre look far away but you turn the mouse and they are suddenly right next to you. REALLY hurts the eyes and messes with the head.
On that note, I was very disappointed that many newer games have this same issue. So far, I've only seen two games handle it really well. Satisfactory (great game, btw) and the new Metro game.
Back to 7dtd, the HUD items aren't in the best location, being to the far left or far right, causing a lot of head turning. I'd suggest going for a non-ultrawide 4k monitor unless you do productivity things. Then it's really good if you set the screen up correctly with some third party apps.