In 2017, people talked about 2013 bubble, said about adoption, difference.
Bitcoin’s Present Bubble Might Actually be the Beginning of Mainstream Adoption

In 2020, peopled talked about 2017 bubble, said it is different. Crypto Long & Short: 4 Metrics That Show How the Current Bitcoin Rally Is Different From 2017

I see 2 opinions in 2017 article that makes me hiccups.
- Mass adoption
- This isn’t 2013 anymore

The article in 2020 has 2 charts for Bitcoin and Ethereum returns in 2 years and that comparison is interesting.