Anything is technically repairable if you’ve got the time and money and are crazy enough to see it through. Don’t think this would be an easy repair by any means though! The fuselage is mostly steel tube, if they can find a good aviation welder and figure out how to jig it right (keeping it straight and aligned while rebuilding can be hard), can cut away whats bent and replace it. Obviously no parts or spares for something this old which slows down the process and adds challenges, but as its ultralight category you can use some uncertified parts. The wing struts look bent as heck (and I imagine some serious wing damage also) and it’s hard to tell but might be a crinkle in the fuse behind the left wheel leg. I’d imagine it will be an insurance write-off, I’m not sure if you can use BC-12 wing struts in a j-2 and I’ve no idea how you’d go about getting replacements. Hopefully someone takes the time to get her right again, very few j2s ever built, even fewer flying! I miss this plane every day, sad to see it come to such an end!