That analysis was shit honestly, Lee drops off really hard. Just reading it at the beginning I realized he made a mistake with Nocturne's ratio, where did he pull the 120% total AD ratio from? Probably mistaking his passive, which only grants a bonus 20% ratio. Vi was also severely under-analysed by not accounting for her W at all, which does max hp damage and scales off AD. What makes Lee useful is that he's an early pressure jungler, that's it, his burst or snowballing isn't any worse than other comparable fighters. In fact Jarvan is more broken than Lee because Jarvan actually has a late game.
The Lee hate is constant on the league boards and kinda hard to understand, who the hell do they want the jungle to be about instead? The jungle is built for fighters like Lee, it will never be for something else at least competitively, a long time ago tanks were used but that's when supports had 0 engage potential.
edit: also besides the whining, what are you a Vlad main? I understand that Riot can be arbitrary, champions with LC$ B1GPI4Ys aren't nerfed as fast as others, some champs like Soraka or Nidalee are thrown under the bus the second they become popular. I main Nocturne, he's been my main for 2 years now maybe? He's had since the start of S4 a 47% win rate at best, so I know the feeling of not playing on champs that Riot loves. But you sound like those Lux mains that ask every few months for a buff "just caus she should be competitively viable". Vlad has almost a 51% win rate, he's a perfectly good champion. I climbed with Nocturne trying every single build on him, every playstyle, runes you could think of. That's where the fun comes from, when you finally figure out your champion so well that you make him good. Vlad, Christ he is a AP ressourceless sustain monster that has a good late game and AOE, git gud ffs.
edit2: Azir motherfucker, he just got released and his minion spears have no counterplay, point and click. Wow, you're really dense when it comes to understanding this game, surprised with your shitty attitude and knowledge you're not bronze.