Are the tokens safe? the answer is almost no. The reason is, if they have great intentions to build a project, they must have prepared careful planning regarding where their tokens will be traded later. Not a few new projects are also listing their tokens on top tier exchanges such as Huobi, Gate, MEXC or KuCoin. Also, regarding YoBit and BigONE, I have never heard of such a memorable experience from traders who trading there.

BTW, I found the same question as yours on the Quora platform which was created 4 years ago. Is that you? Not much response there, but I think you can draw conclusions from the various opinions you get on this forum and on Quora.