What do you mean by "safe"? It will be a (shit)coin/blockchain like any other out there, it will be open source and people will verify that it doesn't contain something malicious. Will it be good? Probably no, every newly launched coin makes a lot of mistakes, and TON itself is nothing revolutionary, it shares similarities with Libra, ETH, TRON, etc. It's time to stop hyping new coins, because it's precisely their goal, instead give them time to prove themselves.