The big problem with the lack of retention of newbies in Bitcoin is that people teach incorrectly and prefer that people come into the ecosystem regardless of the form and for the wrong reasons (NGU). 

This is because Bitcoin is freedom money, and it's about separating money from the state. Bitcoin was created so that there's no need for financial institutions, but people prefer to teach using financial institutions to make it 'easier' to get started, and all that's left is to teach that the number will go up.

People talk about separating money and the state, but they celebrate ETFs and politicians who talk about Bitcoin as if that's a victory. You'll regret it so much when you see that what you're teaching will be used against the ecosystem!