There aren’t any 3rd party repair shops close to me that are in Apple’s Independent Repair Provider network, so if I were to choose a random repair shop my only real option with them would be a battery from a 3rd party manufacturer, which I’ve had bad experiences with before. I wouldn’t mind as much if I could easily replace it again myself if it started swelling like last time.
Yeah it's tough when all you have locally are the aftermarket options. I'm lucky to have two Apple certified shops within a few minutes of my home, and in a pinch two Apple stores within 20-30 minutes.
I bought a 12 Mini a couple years ago to be the shared phone the kids would take if they were out somewhere that we wanted to have communications ability, and it came with a third party battery. It hasn't been awful, exactly, but the life on the battery seems very low even for a mini.
(every time I pick up the 12 mini, I feel tempted to find the nicest 13 mini I can find and set it up for myself. what a fantastic size, makes my 17 pro seem huge)