I think the overall experience of every platinum+ player in the entirety of League is more credible than your individual experience.
Jinx is 10th in win rate, 9th in play rate, among all ADCs (18 in total, so she's right at the midpoint despite being the 3rd most played after Draven and Vayne). Her win rate only slightly improves when you only consider people with 50+ games on her (about 0.5% higher win rate, 51.6%).
Draven is 11th by win rate and 12th by pick rate. Now, to be completely fair, his win rate does improve by a lot more at even the 15-50 games spot (to a bit over 52%). He's still far behind the charts for the other ADCs I mentioned though.
Back to Jinx, she was very strong in season 5, but she's definitely not strong now. Try actually playing her before you claim her weakness doesn't exist - as someone who has played her I NEVER have had a problem playing against her - even at the height of her dominance in season 5.
If you can get in her face, she's dead. It's pretty simple. Her chompers take 0.7 seconds to arm within a small range that can easily be walked around anywhere outside of the smallest jungle passages.
Since you've been around so long, I trust you remember when Veigar's cage was changed from 0 to 0.75 seconds to arm, yes? His cage is not only thicker and longer ranged than Jinx' chompers, it also is a full cage that can easily trap someone inside. Yet when it had the 0.75 second delay the entirety of the boards was up in arms over how brokenly weak Veigar was. He was considered worthless, his win rate was around 40%. They've since improved it to 0.5 second delay which has brought him back in to relevance, but he's still considered a weak pick (33rd of 46 mid laners by win rate, 31 by play rate).
So why is it players have so much trouble not getting caught by Jinx' chompers when it was, and I quote from the time, "impossible to catch anyone with Veigar's cage on a 0.75 second delay" when his cage is so considerably larger than Jinx's chompers? And it's because players respect Veigar's cage, but they don't respect Jinx's chompers and get punished for that mistake repeatedly. Her enemies frankly suck at avoiding them. When against Jinx, I only ever get caught in her chompers if they're chained after another CC. When I play as Jinx, my chompers hit their intended target the majority of the time. It's not Jinx being strong, it's the enemy not reacting appropriately.
With a good amount of peel on your team and the enemy team lacking hard engage or assassins, Jinx is definitely a force to be reckoned with. That's the same as saying that Master Yi is strong against a team with no hard CC though. Saying Jinx is strong enough because she can dish out loads of damage in her ideal composition isn't fair - she should also be favored by this meta (a snowbally ADC who is amazing at team fights and doesn't mind enemies stacking defenses) but instead is passed over by half of the ADC lineup despite her mains playing her far more than other ADCs can ask for.
Draven goes to the same degree. He should be the top tier ADC right now in this meta. The fact that he isn't says he isn't strong enough. I wouldn't want his early game to be stronger, but a late-game buff wouldn't be terrible for him (e.g. + 0 / 50 / 100 damage on his ultimate at ranks 1 / 2 / 3). Jinx should get back some of her lost attack speed (not bringing her back to S5, leave the ultimate change and only give back part of the AS).