It's all because of lack of information and knowledge among people.
Knowing nothing, they are trying to prove to people their rightness.
Ethereum will never be able to bypass bitcoin at least because of one factor - the number of coins.
Bitcoin is limited, and its number decreases every day, while ETH is endless.
The inflationary nature of Ethereum has little to do with whether Eth will overtake BTC or not.
Eth is a smart contract blockchain whereas BTC is a underlying currency for all cryptocurrencies to be priced upon.
I would say that BTC is the trading currency of the crypto world much like how USD is (still) the trading currency for the traditional world.
ETH will not replace BTC as the base trading currency so BTC will always have its place but BTC will never be able to rival ETH for deployment of
smart contracts or DApps.
Both ETH and BTC will have their place in the new world. But because of the greater demand run smart contracts in the future economy, ETH will
likely overtake BTC in terms of market cap.
if you want to find a parallel in the current world.. i would describe BTC as Gold, whereas ETH is crude oil and the other smart contract blockchain like NEO, Cardano etc as Natural Gas or Heating Oil..
Gold is well known to everyone in the world as a storage of value but in terms of trading volume, Crude Oil, Natural Gas and Heating Oil has a much greater trading volume versus Gold as Crude Oil, Natural Gas and Heating Oil runs the world.
https://www.thebalance.com/the-most-actively-traded-commodities-809314In the future world, smart contracts blockchain are like the crude oil that will run the world and ETH will definitely have a much higher market cap as a result.
Being a storage of value (BTC) like gold is not sufficient to justify the top position in the crypto world. The recognized ability to run smart contracts, that will run the future economies, will justify the top position in the crypto world.
So we will see more than 1 smart contract blockchain being on top of BTC, in terms of market cap and trading volume, in the future. And this is based on what is valued in our current world..