As long as Binance has still the biggest volume, I would say still CEXes have the powers, money goes to safe places and if you see some exchange or bank got the bigger money in it you should know it is a safer place than others.
I do not think that you are right... Trading volumes are far from being an indicator of exchange reliability! The history of cryptocurrencies is full of examples of scam "reliable" exchanges! For example, MtGox, BTC-E... All of them once were reliable...