What is exactly the EOS and why it is being demanded by most bounties and airdrops these days?
EOS is a blockchain protocol powered by the native cryptocurrency EOS. The smart contract platform claims to eliminate transaction fees and also conduct millions of transactions per second.
There may be various reasons that most companies demand EOS account to semd bonty or airdrop rewards:
EOS transactions are much more faster then other blockchains.
EOS is far more secure then any other blockchains
The transactions on EOS are free of cost. But it does require ram and memory, which you do have to buy