At the moment the distribution through bounty does not look free to me because of the activities, but compare to same activities they pay with good budget. Airdrop has its advantage to attract new traders and improve liquidity, swap had a lofty airdrop recently and they are not stupid. Most recent IEO on Binance conduct bounty campaign; Injective protocol, Cartesi, Harmony etc TON has a big community which can grow bigger they need to teach the community how to make use of the coin