I will tell honestly, I do not know as other coins, but such coins as btc and eth will be very long even if many other coins or projects will die, then these will die only together with the crypto market. And still here it is possible to add dex coin now. Now many such coins look perspective as not quiet time approaches.
yup, its somehow the "safe" bet considering crypto being risky. Only thing I dont like is that when BTC falls, everything else (including ETH) falls with it. Only some coins like BTX were holding the price, probably because weekly 6% airdrop.