According to definition, Blockchain is an append only distributed database that uses blocks tied together with cryotography to secure, prevent tempering and revision.

Therefore Ethereum isn't a blockchain when it allows Vitalik friends to hardfork and reverse transactions they don't endorse. You can call it a distributed programmable database but not a blockchain.

Nevertheless, it's a great display of success of these ethereum features by becoming the de facto market standard for the generation of custom tokens that has been fuleing an ever increasing number of ICOs and crowdfunding. This price is probably going to increase further due to the success of the platform.