The simplest way to explain it is that Freja’s skill floor is higher than low elo players can manage.
She’s still a very aim intensive hero, with no way to confirm her main damaging ability, or another ability they can use to deal damage more easily, like how Soldier has Helix, or Ashe has Dynamite.
Not to mention those heroes are hitscan. Hitscans are far easier for low elo players to pick up, theyre just more intuitive and more consistent. You look at plat games and youll see they dont all actually have outrageously bad aim, they just are horrendous with consistency.
Well Freja demands consistency to find value, with no way to guarantee her damage, or any other ability that lets her actually deal some damage in an easier way.
But up in high elo? Double body shot is NOT a hard ask. Having good mechanical skill is the bare minimum requirement to be a Masters DPS player.
Freja’s issue is Blizzard desperately wants a character tied solely to mechanical demands to be low elo viable when it just isnt realistic, and those concessions they make in order to try and make that happen is making her ungodly easy and powerful for high elo.
You change Freja’s kill combo to require a headshot and a body shot instead of double body shot? She’d be in a MUCH better position for high elo than she is now, but she’d be completely unplayable for low elo
Not to mention in order to lower the consistency requirement with her explosive bolts Blizzard has opted to lower the punishment of missing a bolt by just having them come back constantly with short cooldown dash resets.
Which again is something that is disproportionately more valuable in the hands of good players. Her cooldowns are so quick that her explosive bolts realistically have no down time, Freja will ALWAYS have kill pressure at all times, even if you watch her use both dashes back to back.