You believe or not but the future of cryptocurrencies are ETH and another one

You believe or not but the future of cryptocurrencies are Ethereum and another one which starts with the 17th Alphabet, why I think that that because it is strongly possible that any group or whatever I cannot specify because I do not want that it may happen can create a super computer in order to temper the blockchain and do the 51% of attack on bitcoin network which currently looks impossible due to the current hashing power but to increase his balance in bitcoin, they would need to manipulate all the blocks, bitcoin networks currently has less blocks comparing to ethereum because more and more applications are smart contracts are running on the ethereum blockchain which are generating more and more blocks but bitcoin network has the less blocks, this make impossible for someone to manipulate the ethereum blockchain or edit all the wallets/blocks, in order to protect bitcoin, bitcoin network will be required to increase a large number of blocks which is only possible if there are more and more smart contracts on bitcoin network, so bitcoin network will be required that currency which is currently available to add the smart contract facility on its network, it will only use that currency. Why big number of blocks required because it can slow down the process of 51% of attack, while they can slow down the process, governments or big companies can make such kind of computers to stop or overtake such kind of attacks to protect the network.