Me and my '14 were in an accident Feb 2016 when it had 27k miles on it and the insurance company chose to do a full frame replacement. I have 52k on it now a little over a year later and have had ZERO issues, none. Heck I think it's better than it was before. All depends on the shop doing the work. Everyone is entitled to their own opinion, but too many just assume "it won't be right again". A new frame is better than a repaired frame (insurance companies love to try for frame repairs).
Also, the insurance company is in the drivers seat, not you. They make the decisions. You really have zero impact on their final determination. They spent $27,000 to fix mine and it wasn't brand new.