I know that there's a security flaw in Ethereum chain, but the main reason why they are hacked are not because of ETH platform, but by the dev themselves. The dev team of that coin is not careful enough to secure their ico funds the safest way. Even if that is the case, I won't say that all ICO owners are scammers just because of one being hacked.
It can be said that the new delevopers team is mostly weak in the field of security. This is the problem, they should still be unfit to run the project, but still impose to run it