Dude, scholars are not like that. They don't avoid any narration. They take this quote of ibn 'Umar as a practice only at the time of hajj and 'umra and thus it is permissibile at these times only. They don't say he was wrong, that's a huge misconception. They say that people have misunderstood his practice. Do you possibly have knowledge on my other question though about straightening the beard?