You are mischaracterizing the Oromo cause and struggle. Religion is not an issue for us, because Oromo's are targeted as a nation, regardless of the religion of the Oromo.
If it were failed, then Abiy would not be sending in Eritreans, his own forces, etc, to fight it, and he wouldn't be losing land in Oromia to them. Just because you don't see or hear of what they're doing; doesn't mean that they're ''failed.''
That statement, is based on conjecture and your non-informed-opinion as well, ''OLF doesn't have majority sympathy in oromia,'' what is that based on? have you done the research? no.
if OLF weren't more popular, first of all, the party of abiy-opdo/pp oromo wing, wouldn't even exist! secondly, it wouldn't have targeted the olf leadership to ensure they don't compete in the recent elections fair and square.