It's just a twitter take, overcompressed and lacking nuance. By all means write a toy database for learning purposes, but in 99+% of cases you should probably t

It's just a twitter take, overcompressed and lacking nuance. By all means write a toy database for learning purposes, but in 99+% of cases you should probably then turn around and use the ones with tens of thousands of engineering hours poured into their correctness properties when you want to put something into production.