This is an example of fake news or fake analysis. 1. Blockchain could be faster or slower, depending on which ctyptocurrency is being used. Some crypto could transact in a second or less. 2. Blockchain fee could be very cheap and the cost is fixed for each transaction. Unlike credit cards which charge you in percentage.
Duh, everyone already knows Bitcoin is slow. It doesn't take an experiment to figure that out. And i'm sure one day another faster crypto will take Bitcoins place.