$1600 in an exchange long term? Thats pretty crazy considering the exchanges that has been hacked. Hows an exchange going to be any safer then all the other methods?
adaseb probably means that a Top exchange is a safer place to keep your funds unless you have proper means to safeguard the money yourself.
We have seen users not taking note of their private keys, entering and forgetting which passwords they used or falling for the Electrum phishing scam.
All these would be prevented keeping the funds in an exchange but in that case we are open to other dangers arising from keeping funds in an exchange.
Although I don't agree with keeping funds in exchanges I understand what adaseb is talking about.
You point is also valid.
There have been so many hacks, exit scams that it has become like a lottery. A spin of the wheel to see which exchange is next.