Valvoline did an oil change, stripped out the threads, told the customer they couldn't fix it, and slapped a literal plug in the pan and called it a day : r/Justrolledintotheshop
Engine Oil Pan Sump Drain Plug Bung w/ Seal for Subaru inc Impreza WRX, WRX STi | eBay
Genuine Subaru Oil Pan Drain Plug and Gasket. Brand new. 807020010. Subaru STI | eBay
PSR Magnetic Oil Drain Plug M16x1.5 Black - Subaru WRX/FXT/BRZ/Toyota 86 (FA) PSR-MODP-M1615BK | PSR