Wonder what people think of the advice in that article. If DO is a good provider for Tor, other security precautions to take, if the article is just a terrible idea?

For one I thought I've heard people mention using port 443 or 80 instead of 9001 to help Tor users behind firewalls

If you have a raspberry pi sitting around, you can contribute to the network by setting it up as a non-exit tor relay, which is completely safe.