The reason is explained here https://bugs.funtoo.org/browse/FL-5318?page=com.atlassian.jira.plugin.system.issuetabpanels%3Aall-tabpanel
The profile overrules the make.conf
I think I resolved this by cheating. My machine is virtual so I reverted to a snapshot before I made any changes then proceeded to start over, starting with the instructions at https://github.com/funtoo/meta-repo. I then added the following:
dev-python/appi python_targets_python3_4
dev-python/mwparserfromhell python_targets_python3_4
dev-python/requests python_targets_python3_4
dev-python/cryptography python_targets_python3_4
dev-python/pyasn1 python_targets_python3_4
dev-python/pyopenssl python_targets_python3_4
dev-python/ply python_targets_python3_4
dev-python/py python_targets_python3_4
dev-python/pycparser python_targets_python3_4
dev-python/idna python_targets_python3_4
dev-python/ndg-httpsclient python_targets_python3_4
dev-python/urllib3 python_targets_python3_4
dev-python/chardet python_targets_python3_4
dev-python/PySocks python_targets_python3_4
dev-python/cffi python_targets_python3_4
virtual/python-ipaddress python_targets_python3_4
app-admin/ego python_single_target_python3_4 python_targets_python3_4
I still have to re-emerge world to make sure everything is good, but I did manage to get ego installed and it's syncing.