This anti-ETH sentiment is caused by competitors like EOS and Cardano who market themselves as Ethereum killers. Last year everyone loved ETH and criticism was very rare, but now that competitors have launched their networks, the FUD bombardment has begun. I personally wouldn't be 100% bearish on ETH, I think in some very long run it will lose to BTC, if Bitcoin will get smart contracts, sidechains and other features, simply because Bitcoin is more decentralized and secure, but in the shorter perspective ETH at least has some proven track record of developers doing their job, while its competitors are still very young.