TurboTax 2023 was built using a current version of Apple's Xcode development environment which supports building universal binaries that run natively at full speed on both Intel and Apple Silicon CPU's by merely changing a build setting. However, if TurboTax includes low-level Intel machine language, it wouldn't run on Apple Silicon. Or maybe Intuit doesn't want to test TurboTax on Apple Silicon Macs. However, it's rare that an app would run differently on Apple Silicon and Intel CPU's if the TurboTax developers are using Apple's development environment.
