LoL is losing sight of what made it huge.
This game didn't become big over Big names like HoN (back in the day), Dota and Dota 2 because it was the one with the most flashy mechanics. If people wanted mindfuck champions that required 50 intricate combos to play right, they'd have invoker and such in Dota 2.
Yet, Riot has called Invoker type champions toxic. Yet, invoker wasn't mechanically crazy, just strategically.
And they come out with stuff like Kalista, Azir, Braum, yasuo, Zed, New Rengar who are all basically very mechanically intense to the level that most regular players will not be able to get anything out of these champions. Hell, 90%+ of your playerbase still isnt able to get even marginal benefit from the ranged ADC role because of how its designed: Fast APM and use of Hidden Commands that are unintuitive to become powerful as opposed to the simplicity and clarity of all other roles in their most basic form.
This game became the monster it was because of the depth it offered within its simplicity. The new champions and direction riot is going is adding tons of complexity but not a whole lot of depth leading to kits that honestly...most of your playerbase cannot exploit nor will they ever be able to. If nobody above plat/diamond can play any of the top champions in rotation and then you are constantly pushing your e-sports agenda it just leads to such a bad environment.
You're bronze/silver players want to be able to pickup rengar, zed , yasuo etc. without feeling like complete shit for making that pick. Sure they don't reach pro levels of play but because they lack the insane mechanics on these champions they'll basically go 0-10 every game and this is starting to become true of EVERY top tier pick and new champion released.
Azir is perhaps the most unintuitive and nonsensical champion ever released just for the sake of promoting a playstyle that your outdated assets and engine cannot handle. Sorry but when I want to control multiple units I want to do it as a strategist not spam clicking at Korean level APM just to squeeze out dps from tethered surrogates that are slow and clunky unless you click really, really fast.