Have seen a few in my days. Easy to fix, difficult to keep it from happening again.
Buddy used to get into his convertible,butt against backrest and slide in. He quit doing it after he broke it and trashed some upholstery. Welding was easy, the vinyl repair was pricey.
Friends wife's Honda broke near hinge part that allows power adjust. Someone else welded it and those broke. I rewelded. Will NEVER be adjustable again. LOL