From https://developer.mongodb.com/community/forums/t/mongodb-org-server-el8-package-has-dependency-on-python2/14732:

I’ve just deployed MongoDB Community Edition to a CentOS 8 system using the repo detailed here:
https://docs.mongodb.com/manual/tutorial/install-mongodb-on-red-hat/ 1

I noticed that the installation prompted a number of Python 2 packages to be installed as a dependency.

Querying the mongodb-org-server package confirms the dependency:
rpm -qR mongodb-org-server | grep python
python2

As Python 2 was sunset at the beginning of last year:
https://www.python.org/doc/sunset-python-2/

CentOS 8 uses Python 3 by default.

I’m not sure what the dependency on Python 2 is but, are there any known plans to move to Python 3?