The knowledge of cryptocurrency is growing everyday but the growth of the knowledge of cryptocurrency is a slow but steady one in world as a whole. In some countries, the knowledge of cryptocurrency is less than 20%. It's still in the hush level. Since the knowledge growth is steady one, the knowledge will keep increasing.
Thats right, we don't need to worry about the spread of crypto itself. In my own country Crypto is getting bigger, the total users are hundreds of thousands and will continue to grow because the knowledge of crypto will be increasingly spread, in the next few years, crypto will become mainstream..