No. Don't blame MyEtherWallet.
because MyEtherWallet always Warns you about to check the Spelling of the Website/Link/address
before inputing your private keys.
maybe you just accessed your private keys on a phishing Mew site.
it will really hack you..
always bookmark MyEtherWallet because you cannot Trust Google search Engine.
sometimes they give wrong Spelling MEW site..
Their "warnings" are more recent, and were not in place when I got hacked.
I still believe that ever using a Private Key to log in to anything online is very dangerous, and MyEtherWallet should know this. A Private Key is just that, private.
I continue to avoid Ether and ICO's. I believe everyone else should too.