No it's not safe, there is a scam listed on that top list. Don't and never ever invest to bitconnect that's the scam that I'm talking about so just because of that one coin listed on top 25, it made that list to be not safe at all. I just noticed some new coins that are into that top list, the rest are fine but still you had to understand and learn those coins deeper. My suggestion is that invest more with bitcoin, you can even earn more than 1,000x with it for just a very short amount of time.