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
IMO, this just another strategy of those scammers, besides all of the funds for their project were being funded tru pre sales or private sales. Then after that they can easily manipulate the market as they have the biggest number of tokens being hold then later on this token shall be converted to fiat then run again.