I'm going to drop him from metadata.xml. The package is also part of dotnet herd, so I'm just opening this bug as FYI.
commit 8e9731b3e040de8ae4de63ce354dd85746b818e2 Author: Michał Górny <mgorny@gentoo.org> Date: Tue Dec 29 23:30:57 2015 app-misc/tasque: Remove retired dev from maintainers, #570166