Yes i agree with you i find the technology of ethereum better than that from bitcoin and i believe a lot of people already know that ethereum is the true rival of bitcoin as some people prefer ethereum over bitcoin.
Things are not so simple people apply this kind of thought as if changing currencies was as easy as changing your TV, bitcoin is better than the US dollar and yet the US dollar is still the number one currency so not everything is about which currency is the best, most of the time it is about the currency that is used by the most people.
I don't think it's as simple as saying that bitcoin is better than USD, for many many things the USD is far superior to bitcoin, most transactions in USD have zero fees and those are the day to day transactions that most people care about.
Yes you are right and I know that ETH is slowly growing and gaining but we need to talk about the latest popular currency and that is bitcoin, I also know that bitcoin may not be number one for long time but this will be possible if another currency came out and defeat bitcoin but now the first one and top cryptocurrency is bitcoin.