Hard disagree there. It is a tunnel, it is plenty fast if the intermediate node is close enough, and why would you want encryption at the IP layer.
It works great and gives me IPv6 that I otherwise wouldn’t have with my ISP (Optimum), allowing me to connect to native IPv6 site and use all the IPv6 functionality I want (dedicated IPs for containers/VMs etc).
There’s focalboard (if you can get past the weird license): https://www.focalboard.com/
Or you can use Gitea: https://gitea.io/ It’s mostly meant for collaboration on source code but it has a ticketing system with boards.