Another crypto project (DeFi) is hacked again and now I'm starting to believe that devs are the ones pulling the rug themselves because this is becoming a child's play right now

Are we been lied to about DeFi projects getting hacked almost every months nowadays? What do you have to say
I have heard today that a binance smart chain based defi was hacked and a record $31 million worth of funds were stolen, seems like it is the biggest hack till now because earlier we use to hear 1 to 6 million hacks but this is huge in terms of value, i hope hacker will be traced and he will return the funds and project will continue.