Hey guys, my bad. They're perfectly fine. Proven by the pickrate in KOTD3 - in the most open version of Arabia in years. Oh wai..
Then we should increase the Persians TC bonus to 20% and Malay faster advancing speed to 150%; I don't see them picked either. Maybe we remove Japanese and Britons of the game as well, as the numbers clearly show players are triggered into picking them and losing.
Sarcasm apart, Magyars are, indeed, not one of the strongest Arabia civs in 1v1, but it doesn't mean they are terrible and should be given a bonus which would completely break TG balance. Do you want to slightly improve civs like Magyars, Turks and Huns? Decrease the creation time of CA line and maybe the cost and research time of HCA and Parthian Tatics.
Small changes should be preferred over introducing game breaking bonuses whenever you want to address balance issues. Take a look at the number of complaints about Khmer farming bonus and you get my point.