I definitely agree with the sentiment but I’d be careful not to confuse design w/ implementation. The design decision was sub-typing, single table vs many tables is implementation. “No time to refactor” holds true in the other direction; if you over complicate things, you’ll be stuck with it. That’s why I said “when starting new projects”, alluding to not knowing exactly what’s necessary. May end up with only 3 sub-type specific columns and no sub-type specific relations. I don’t want to hijack the thread though as this is off-topic from the original post because I agree with what you said
Edit: some clarifications
