This is too much precaution or its really better never store cryptos in exchange? All exchanges are risky ?
Most of the day traders are only storing the exchanges because they are all always monitor the Crypto market and side by side buying and selling the best profitable coin. So it depends on our needs. If you looking to invest in long term investment just hold in wallet or If you are day trader exchange site is more convenient to trade in anytime because it is reduce the time of investment.
I got some long term coins but still stored on exchanges because I still want to see how the market moves and possible changes might happen.
Also small amounts of investments might not be worth a keep outside exchanges because of transactions fees but this will also depend on the coin though. So we just have to make sure that we are trading on reliable top exchange for higher chances of security.