Having to buy a video game inorder to play it is not a bad thing, it becomes an issue when the game is a non-complete shell of a game that requires you to pay more than the base price to have an actual experience
Wait what... the game if free, the champions are free. You can buy skins, wards, icons, etc "to support" Riot. You also can get these for free. Just got my reward from gamehag, 1580 RP on EUW. 
I don't see how League is pay to play.
Like orsika19 said, everything is free/can be acquired via in-game currency except for cosmetics.
The only thing that comes to mind that "helps you advance" in game is just xp boosts. And since the lvl rework it isn't that relevant anymore 
no a good idea.
how is this relating to lol
What? League is in no way a pay 2 win game
MONEY IS ONLY FOR SKINS NOT P2W
in 3 steps
Choose the game that interests you and play itfor free.
Every game has some quests for which you will receive Soul Gems.
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
You know that on Gamehag you can get real rewards for free, right? Join us, complete walkthrough and get your chest!
Its bad that you need to pay money to play