[MM3-users] starting gunicorn per mailman.log yet gunicorn not installed

I see the below in my mailman.log, yet I installed uwsgi and NOT gunicorn. My mainmanweb.service file includes "ExecStart=/opt/mailman/venv/bin/uwsgi --ini /etc/mailman3/uwsgi.ini" and not the gunicorn equivalent. Does this log entry make sense in my case?

[2023-06-22 12:44:36 -0700] [411132] [INFO] Starting gunicorn 20.1.0