I mean.. I don't think she's been recently a meta pick even in the pro scene.
I'm not sure though, I don't really follow the pro scene since I haven't taken the game very seriously, I don't think I remember seeing her though the last times I peaked into pro tournament streams.
And usually things work in pro play, that don't necessarily correlate to solo q, like Ashe / Sivir might be S tier in LCS or highly prioritized, but not as so in solo.
Because of how coordinated teams can be in a pro team setting, compared to SOLO q.
Also there are way better picks right now than Jinx.
I'm ADC main in diamond atm, I mean not many pick her, but that doesn't mean she's not great thats not what I'm saying..
Her range is very overwhelming in a low elo environment, coupled with her empowered crits ( since fish bones gives 10% increased in damage )
So I can see why you're claiming she's a monster, because she just turns on Q past level 9 to auto away and she has the longest range in the ADC category.
All I'm saying is that... If you pitted a Vayne or Twitch against a Jinx who couldn't lane as well against the other, you would find that she dies quite easily to them in a team fight. Vayne's IE + Shiv combo, plus her passive ability to just chase Jinx down to the ends. Twitch's R range which rivals Jinx's, there's no where she can get close without getting blown up.
I wouldn't mock up Jinx as requiring a nerf and being god tier based off of experiences in a specific elo, in this case yours, which is Bronze.
I think she's good yeah, but still there are other better picks out there than her, I wouldn't call her PRIME for freelo. You haven't played against Twitch yet have you? lol or at least a good one
There's a reason if you go to pro players, you don't see them picking Jinx in their stats, it's Ez, Twitch, Jhin, Cait right now.
But in the end, I can still see where you're coming from, I can imagine her being freelo too in that skill rating.