While I agree with you, unfortunately this is unrealistic. Unless a startup happens to have someone skilled with schema design, they’re going to make do with wh

While I agree with you, unfortunately this is unrealistic. Unless a startup happens to have someone skilled with schema design, they’re going to make do with what they can, and it’s very unlikely that they’d waste headcount on a dedicated DBA / DBRE at a young stage. The immediate effect of that, of course, is that they also won’t try to hire any such person until the DB is a problem they can’t scale via throwing money at it.