The ORMs I've tried tend to produce some pretty specific table structures that are a pain in the ass to work with outside of the ORM, imo

One of the sticking points I've found in the past is if I create a new table outside of the ORM, it doesn't know how to use it. Then if I try to add it to the ORM's model it doesn't use the existing table, it creates a conflict. Annoying stuff like that