Check out any of their Q&As, they've talked about this ad nauseam. To summarize: from their perspective, no p2w at all. Only cosmetics/skins (and the game you will not look bad without such things) are sold and they are trying to prevent any possibility of trading anything for real life moneyz. They seem pretty intent to crack down on any sort of behavior like that very hard (it was a major priority from the get go). Ultimately you can take their word for it or not, personally they seem genuine and I believe them.