Sometimes. For example, Mike Novogratz predicted the increase of BTC in 2010, and even his friends laughed at him. But he is a bitcoin billionaire today! I noticed, that many experts, who ignored BTC and blockchain earlier, changed their opinion.
I also like Binance and Coinbase! But you may use other online platforms, for example, I found a new place, which is called Bormancorp. There are a lot of financial instruments, not only cryptos. Your deals and private info are SSL encrypted.