It seems to me that BTC and Ethereum thank their growth prospects to their established names, rather than the tech behind it.
If you think it's different, let me know.
Well, I do not think so. If we deconstruct your statement that Bitcoin is having its growth due to its established name not the underlying technologies, it does not have any causation. Let's take a closer look, in first hand, how do Bitcoin gain its establishment? For being a pioner? Or just simply the network and the community stand its time and battle-tested here and there. There is a reason why Bitcoin is established, and the cause of it is what some or many people realize the condition of why the coin itsels has growth potential.