riot doesn't help toxicity in league

Am i the only one who thinks riot contributes to the toxicity of this game? Take their preseason off-meta video, they encourage this while at the same time punishing it. I thought i was crazy at first but seeing how for example Ziggs was listed as an "adc/bot laner" now he is unlisted from bot lane. Can only think of 1 reason and that is because of "pros" not picking him bot anymore? I don't keep up with this "lcs" or "Pro" players but i did find it funny a few months or whatever or so ago I have seen ziggs listed as a bot laner now he isn't. I guess what I'm getting at is pro players do 1 thing or start a trend and if it blows up (I'm guessing) riot kind of gives it the seal of approval? I went Nocturne adc with barrier/heal got flamed out the arse but ended up doing good. Reported the players who flamed me through lobby report and via ticket to only have a riot agent tell me.

"In the future, I would definitely recommend muting players like this as soon as you see this sort of negative behavior, and continuing to report them afterward as even just one report will put a player on our radar. As far as steps you can take to avoid being flamed for your choices in game, that's a bit harder to give advice on. You can always try to play more meta strategies or picks, like playing Nocturne in the jungle instead of in lane, or looking up builds and runes online to copy. The best you can really do is just focus on your own gameplay and improving, and ignore the words of the naysayers while you're finding your feet."

Long story short encouraging players to play off-meta at the same time suggesting them to follow meta and what does meta equal? Whatever the quote on quote pros players do... I could be 100% wrong but just what i got following my interaction with this game this.