Yes bro, many non-Ethiopians, including big media outlets like Aljazeera, see his name "Ahmed" (which in Ethiopian tradition comes from his father) and think he is a Muslim but every Ethiopian knows he is an evangelical Christian, we have even audio of him preaching the bible in his church. In Ethiopia we have even pastors with Muslims names. That is no surprising. His father is Muslim Oromo, his mother Orthodox Christian Amhara but the PM is an evangelical Christian, who married an evangelical christian Amhara.
Cocerning HOA Union, as PM Abiy said we need to stop fighting over artificial borders that were drawn by colonial masters. We should ignore these borders completely and let people cross, interact and do business as used to be in Africa for centuries. What is the difference between an Ethiopia Afar and Djibouti Afar or Eritrean Afar. The same goes for Somalis, Oromos etc. It is a disgrace for Africans to stick to this borders and even worse fight over them. They should have never been in place in the first place. These borders can stay on paper for all I care but should be ignored on the ground and never be allowed to separate families and never ever be a source of fighting.
Here is a video showing his wife leading evangelical christian worship session