That is a very specific use case, and might only be a small subset of your actual data. If you don't have these specific requirements (eg. CRUD apps), you can save yourself a lot of unnecessary headaches by defaulting to MySQL.

My main point is attempting to counter the narrative popular on HN that postgres should be an automatic default. For sure there are many aspects in which postgres is superior, I absolutely do not debate that, especially when it comes to developer experience. But there is much more to it than that when it comes to delivering business value. That's where ops and DBA concerns start to matter, and IMO MySQL is so far ahead in this regard that it outweighs all the other hideous warts of working with it, when you consider the bigger picture of the business as a whole.