Because knowing how they worked through the decision to come to a conclusion on using a particular product is valuable.
Postgres is usually the first choice for applications like this so knowing why they chose something else over that could influence others that need to make a similar decision.
Right, which is why asking how they came to that decision (instead of using a DB dating back over three decades of development) is useful and reasonable.
Postgres is usually the first choice for applications like this so knowing why they chose something else over that could influence others that need to make a similar decision.