platform.linux_distribution was deprecated in Python 3.5 and removed in 3.7 (https://docs.python.org/3.5/library/platform.html#platform.linux_distribution) python3-distro is included in CentOS Stream 8 and derivatives and should be used instead of platform. More details: https://github.com/python-distro/distro
This bug report has Keywords: Regression or TestBlocker. Since no regressions or test blockers are allowed between releases, it is also being identified as a blocker for this release. Please resolve ASAP.