Sure, and after reading the ReadMe.rtf in the Python-3.9.6-macos11.pkg, the following is stated:
python.org binaries for macOS have been provided via a downloadable installer that supports the Intel 64 architecture on macOS 10.9 and newer. This installer variant has been the default download for 3.9.1; it will install and run on all Macs that run macOS 10.9 or later, including 11.0 (Big Sur). This variant should run transparently on new Apple Silicon Macs using Apple's Rosetta 2 emulation.
I very likely installed Rosetta2 for some other application reason and was then never challenged by Python installers. This RTF file is found in the /Applications/Python 3.9 folder once the installation is done.
When the installer asks the OP to install Rosetta2, then they should agree to it, so the installer can run and finish. Alternatively, one can install Rosetta from the Terminal, as pointed out in this Der Flounder article.