It's been some months and I've been working with data, I'm in charge of the data migration and after 4 months into the job, they tell me that the data is sometimes transformed but they do not have a tool to validate the data, instead they do it manually.
When I said, that if we do it manually, it'll be prone to human error. My team says that humans make errors.
They're basically checking 2 rows of the database manually and then pray. That's their way of testing/validating the data.

Couple years back when I was in college, we used to talk about code quality or whatever but I don't think that's followed anywhere.

Developers are lazy. That's the fucking truth.