Conquest paladins Fear spell hurts allies until lv10?

So, i noticed an odd detail about Conquest paladins’ ability to use Fear spell regularily. And it seems bizarre, i feel like im missing something/literally cannot read.

The conquest paladin gets their aura at lv7. They get the fear spell at lv9. And they get Aura of Courage at lv10. Basically, until lv10, casting Fear would make any of your allies in 30ft TERRIFIED of you, too (you cant choose, everyone has to save). Granted, if theyre in 10ft of you then their save is boosted -but its still weird. Your main ability and you cant use it the level you get it. You have to wait till 10 for it to be safe?? And even then, if not all your allies are fittable within a 20ft diameter then u cannot cast it -they would be making a STRAIGHT save against you. Also, this spell’s in-character effects are quite cruel. Moreoso than a fireball…. maybe.

Heres the ability descriptions:

Fear 3rd level illusion Casting Time: 1 action Range: Self (30-foot radius) Components: V S M (A white feather or the heart of a hen) Duration: Up to 1 minute Classes: Bard, Sorcerer, Warlock, Wizard You project a phantasmal image of a creature’s worst fears. Each creature in a 30-foot cone must succeed on a Wisdom saving throw or drop whatever it is holding and become frightened for the duration. While frightened by this spell, a creature must take the Dash action and move away from you by the safest available route on each of its turns, unless there is nowhere to move. If the creature ends its turn in a location where it doesn’t have line of sight to you, the creature can make a Wisdom saving throw. On a successful save, the spell ends for that creature. 
Aura of Courage Starting at 10th level, you and friendly creatures within 10 feet of you can’t be frightened while you are conscious.  At 18th level, the range of this aura increases to 30 feet. 

What do you think? Is this intentional to, like, balance it or something?? The lv10 aura is part of base paladin, btw. So maybe its sort of just a coincidence?

But if this is how it works, i guess conquest paladin multiclasses will need to bump up to 10 from now on?