Although there are similarities between crypto and stock as you mentioned but I think one major difference is the ROI. You see in crypto ROI is huge compared to stock but on the other hand risk involved in stock investment is not high compared to crypto. Block chain technology is something to think about.
I will not say crypto is like stocks, but penny stocks. I have seen so many penny stocks rising too much and then falling hard and the same happens with crypto where lots of coins get vanished and cannot be seen anywhere once investors take out their profits. I was always reluctant with doing penny stocks, but don't know what dragged me into loving crypto.
they can be the same in a sense that you can invest but crypto has another function .
are penny stock currencies ? they are still stock but they are more closer to crypto because of volatility and both are currencies .
if you love crypto , you might also like penny stocks . think of it as diversifying