Technically people don't have any problem with something like Ethereum for what it is. The problem is with what it is being advertised to be.
In other words the problem is when people are being lied to that ETH is decentralized, better than bitcoin (remember flippening?), has immutable blockchain, is secure, has cheaper fees that will never go up, ...
Altcoin developers would prefer to say their coins are killers like Bitcoin killers, Ethereum killers but their coins don't kill Bitcoin or Ethereum but die with time.In other words the problem is when people are being lied to that ETH is decentralized, better than bitcoin (remember flippening?), has immutable blockchain, is secure, has cheaper fees that will never go up, ...
How many cryptocurrencies have died?
Quote
Over 50% of all cryptocurrencies have died. Of the over 24,000 cryptocurrencies listed on CoinGecko since 2014, 14,039 have died.
Flippening?
I recall that Ethereum never flipped Bitcoin in marketcap but there are some weeks media expected for that flippening and that's all. Months later, it's turn of Ripple to flip Ethereum but none of them can flip Bitcoin in marketcap and in price of a single coin.