Postgres is a lot more flexible so if you're making a TSDB, handling geospatial data etc. etc. it is usually better (not to say MySQL can't be used effectively

Postgres is a lot more flexible so if you're making a TSDB, handling geospatial data etc. etc. it is usually better (not to say MySQL can't be used effectively for a lot of these use cases still). I just see lots of people making CRUD web apps and choosing these new Postgres solutions, and that seems like the one thing that MySQL is almost always better at.